A mechanism for remotely operating a circuit breaker

Abstract

A mechanism for remotely operating a circuit breaker includes a cabinet in which a circuit breaker is mounted, wherein the swinging of the circuit breaker handle can be controlled by a remote operating mechanism; the remote operating mechanism includes a handle mechanism, a transmission mechanism, a flexible shaft, and a conversion mechanism connected in sequence; the handle mechanism is disposed outside the cabinet; operating the handle mechanism causes the flexible shaft to cooperate with the conversion mechanism under the action of the transmission mechanism to operate the circuit breaker handle; the circuit breaker includes a first circuit breaker and a second circuit breaker; the stroke length of the first circuit breaker handle is shorter than the stroke length of the second circuit breaker handle; and the remote operating mechanism is provided with a stroke compensation structure for compensating for the difference in the stroke lengths of the first and second circuit breaker handles. The mechanism for remotely operating a circuit breaker of the present invention avoids occupying excessive space and mutual interference, thereby reducing the difficulty of human operation and installation costs.

Description

Technical Field

[0001] The invention relates to a remote operating mechanism for a low-voltage molded case circuit breaker, and in particular to a mechanism for remotely operating a circuit breaker. Background Art

[0002] Molded case circuit breakers (MCCBs) are used to protect circuits from overcurrent conditions. They include a pair of separable contacts that can be automatically tripped by operating a handle located on the front of the breaker housing or based on current conditions. To ensure operator safety, MCCBs are typically installed in a cabinet. The operator uses a remote control device to open and close the breaker without directly touching the breaker handle. However, when the breaker handles within the cabinet have different stroke lengths, and existing remote control devices lack a mechanism to coordinate the stroke of the breaker handles, multiple remote control devices are required to operate the circuit breakers within the cabinet. However, the installation of multiple remote control devices has the following disadvantages: First, multiple remote control devices occupy a large amount of space within the cabinet; second, multiple remote control systems are prone to interfering with each other, which can cause delays in the circuit breaker's operation; third, multiple remote control devices are inconvenient for the operator to operate, and the overly cumbersome operation can easily lead to human error; and fourth, the cost of multiple remote control devices is high. Summary of the Invention

[0003] The purpose of the present invention is to overcome the defects of the prior art and provide a mechanism for remotely operating a circuit breaker with high reliability and wide applicability.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] A mechanism for remotely operating a circuit breaker includes a cabinet in which at least two circuit breakers are installed. The swing of the handles of the circuit breakers can be controlled by a remote operating mechanism to close or open the circuit breaker. The remote operating mechanism includes a handle mechanism, a transmission mechanism, a flexible shaft, and a conversion mechanism connected in sequence.

[0006] The circuit breaker in the cabinet includes at least a first circuit breaker and a second circuit breaker, the stroke length of the first circuit breaker handle is smaller than the stroke length of the second circuit breaker handle, and the remote operating mechanism is provided with a stroke compensation structure for compensating for the difference in stroke length between the first circuit breaker handle and the second circuit breaker handle.

[0007] Furthermore, the conversion mechanism includes a first conversion mechanism and a second conversion mechanism respectively coupled to the first circuit breaker handle and the second circuit breaker handle, the flexible shaft includes a first driving end and a second driving end respectively connected to the first conversion mechanism and the second conversion mechanism, the operating handle mechanism drives the first driving end and the second driving end of the flexible shaft to have equal movement strokes, and a stroke compensation structure is provided on the first conversion mechanism for compensating for the difference in stroke length between the first circuit breaker handle and the second circuit breaker handle.

[0008] Furthermore, the first conversion mechanism includes a first sliding mechanism and a stroke compensation structure coordinated with the first sliding mechanism, the stroke compensation structure includes a third sliding mechanism, the first driving end of the flexible shaft is connected to the third sliding mechanism, and the third sliding mechanism drives the first circuit breaker handle through the first sliding mechanism; the second conversion mechanism includes a second sliding mechanism, and the second driving end of the flexible shaft drives the second circuit breaker handle through the second sliding mechanism;

[0009] After the first sliding mechanism stops moving or before the first sliding mechanism starts moving, the third sliding mechanism can be driven by the first driving end to move relative to the first sliding mechanism, thereby compensating for the difference in stroke length between the first circuit breaker handle and the second circuit breaker handle.

[0010] Furthermore, the first sliding mechanism of the first conversion mechanism includes a first supporting panel and a first sliding block that can slide on the first supporting panel, and the third sliding mechanism includes a push plate that can slide relative to the first sliding block;

[0011] The first slider can slide on the first support panel to operate the first circuit breaker handle. The push plate is provided with a first connecting portion fixedly connected to the first driving end. After the first slider stops sliding relative to the first support panel or before the first slider slides relative to the first support panel, the push plate can move relative to the first slider under the action of the first driving end to compensate for the difference in stroke length between the first circuit breaker handle and the second circuit breaker handle, thereby ensuring that the movement stroke of the first driving end is equal to that of the second driving end.

[0012] Furthermore, the second sliding mechanism of the second conversion mechanism includes a second supporting panel and a second sliding block slidable on the second supporting panel, and the second driving end of the flexible shaft is fixedly connected to the second sliding block.

[0013] Furthermore, the first support panel is arranged on the front side of the first circuit breaker, and a first sliding structure is provided between the first support panel and the first slider. A first opening parallel to the first sliding structure is provided on the first support panel, and the first opening is for the first circuit breaker handle to pass through and can swing within the first opening; the first slider is provided with a first operating part, and when the first slider and the first support panel slide relative to each other, the first operating part is used to drive the first circuit breaker handle to realize the opening or closing of the circuit breaker.

[0014] Furthermore, the first sliding structure includes a first sliding groove arranged on the first supporting panel and a fixed shaft arranged on the first slider as a first sliding part, and the fixed shaft extends into the first sliding groove for sliding engagement; a strip guide groove is provided on the push plate, and a guide part is provided on the first slider, and the guide part extends into the strip guide groove for sliding engagement.

[0015] Furthermore, the length of the strip guide groove is the difference between the movement stroke lengths of the first circuit breaker handle and the second circuit breaker handle.

[0016] Furthermore, the first support panel is rectangular as a whole, and the edge of the first support panel is bent toward the first circuit breaker to form a first mounting portion, and the first mounting portion is used to mount the first support panel on the first circuit breaker; a first opening for the first circuit breaker handle to pass through is provided in the middle of the first support panel, and a first slide groove is provided in parallel on one side of the first opening, and the first slide groove is used to slide with the first slider; a first bracket for assisting in fixing the flexible shaft is provided on the first support panel, and the first bracket is vertically fixed to one side of the first support panel and opposite to the push plate, and an avoidance hole for the push plate to pass through and a first assembly groove for the first driving end of the flexible shaft to pass through are provided on the first bracket, and the first assembly groove is an arc-shaped groove arranged on the edge of the first bracket, and the first assembly groove and the first connecting portion keep the central axis coincident, so that the first driving end of the flexible shaft can make a linear motion after passing through the first assembly groove.

[0017] Furthermore, the first slider has two sides of different widths, the edge of the wider side of the first slider can be abutted against the first bracket on the first support panel, a groove is provided in the middle of the first slider as a first operating part, and the edges on the upper and lower sides of the groove are bent toward the first support panel, a fixed shaft is provided on the narrower side of the first slider as the first sliding part, and a fixed shaft is provided on the wider side of the first slider as the guide part.

[0018] Furthermore, the push plate is strip-shaped as a whole, and one end of the push plate is bent to form a first connecting portion, which is used to be fixedly connected to the first driving end. A strip guide groove is provided in the middle of the push plate for sliding cooperation with the first slider.

[0019] Furthermore, the second support panel is arranged on the front side of the second circuit breaker, and a second sliding structure is provided between the second support panel and the second slider so that the second slider can slide on the second support panel. A second opening parallel to the second sliding structure is provided on the second support panel, and the second opening is for the second circuit breaker handle to pass through and can swing within the second opening; the second slider is provided with a second connecting portion and a second operating portion, and when the second slider and the second support panel slide relative to each other, the second operating portion is used to operate the opening or closing of the second circuit breaker handle.

[0020] Furthermore, the transmission mechanism includes a third bracket and a transmission member rotatably supported on the third bracket, the third bracket is supported and fixed in the cabinet, the transmission member is rotatably mounted on the third bracket through a rotating shaft, one end of the transmission member is fixedly connected to the handle mechanism, and the other end of the transmission member is rotatably connected to the connecting end of the flexible shaft, and the operating handle mechanism causes the transmission member to rotate around the rotating shaft under the drive of the handle mechanism, and the flexible shaft connected to the transmission member moves in the cabinet under the rotation of the transmission member and drives the conversion mechanism to close or open the circuit breaker handle.

[0021] Furthermore, the transmission member is triangular in shape as a whole, the first corner of the transmission member is fixedly connected to the handle mechanism, the second corner of the transmission member is rotationally connected to the third bracket via a rotating shaft, and the third corner of the transmission member is rotationally connected to the connecting end of the flexible shaft.

[0022] Furthermore, the handle mechanism includes a flange and a handle rotatably connected to the flange. The flange is arranged on the outer wall of the cabinet, and a connecting rod is provided inside the flange. The connecting rod passes through the side wall of the cabinet and extends into the interior of the cabinet. One end of the connecting rod serves as a connecting outer end and is rotatably connected to the handle outside the cabinet, and the other end of the connecting rod serves as a connecting inner end and is fixedly connected to the transmission mechanism inside the cabinet. When the operating handle moves in the positive direction, the connecting inner end moves away from the flange, and when the operating handle rotates in the reverse direction, the connecting outer end moves toward the flange.

[0023] Furthermore, the first conversion mechanism includes a first sliding mechanism provided with a stroke compensation mechanism, the first sliding mechanism includes a first slider provided with a first operating portion, and the first operating portion is provided with a stroke compensation groove;

[0024] The first conversion mechanism includes a first support panel and a first slider. The first support panel is arranged on the front side of the first circuit breaker. A first sliding structure is provided between the first support panel and the first slider. A first opening parallel to the first sliding structure is provided on the first support panel. The first opening is for the first circuit breaker handle to pass through and can swing within the first opening; a first connecting portion is provided on the first slider, and the first connecting portion is fixedly connected to the first driving end; a first operating portion is provided on the first slider, and the first operating portion reserves a swinging space as a stroke compensation groove in the swinging direction of the first circuit breaker handle. The first operating portion is a groove structure, and the stroke compensation grooves are symmetrically located on both sides of the first operating portion. The groove structure of the first operating portion is connected to the stroke compensation groove to form an integrated first groove.

[0025] Furthermore, the conversion mechanism includes a first conversion mechanism and a second conversion mechanism respectively coupled to the first circuit breaker handle and the second circuit breaker handle; the flexible shaft includes a driving end connected to the conversion mechanism and a connecting end connected to the transmission mechanism; the flexible shaft connected between the transmission mechanism and the first conversion mechanism is provided with a stroke compensation structure; the operating handle mechanism drives the flexible shaft to move; and the stroke compensation structure is used to compensate for the difference in stroke length between the first circuit breaker handle and the second circuit breaker handle.

[0026] Furthermore, the flexible shaft includes a first connecting end and a second connecting end, the first connecting end and the second connecting end are respectively connected to a transmission mechanism, and a stroke compensation structure is provided on the transmission mechanism for compensating for the difference in stroke length between the first circuit breaker handle and the second circuit breaker handle; the transmission mechanism includes a stroke compensation transmission member and a transmission member, and a stroke compensation groove is provided on the stroke compensation transmission member, the first connecting end and the stroke compensation groove are slidably matched to compensate for the stroke difference between the circuit breaker handles, and the second connecting end is rotationally connected to the transmission member.

[0027] The present invention provides a mechanism for remotely operating a circuit breaker. Multiple circuit breakers arranged in a cabinet are controlled to be closed and opened by a remote operating device. The remote operating device is provided with a stroke compensation structure. When the movement strokes of the circuit breaker handles in the cabinet are inconsistent, the movement stroke difference between the circuit breaker handles is compensated by the stroke compensation structure. This enables multiple circuit breakers to be controlled by a single remote operating device, avoids occupying too much space and mutual interference, and reduces the difficulty of human operation and installation costs.

[0028] In addition, a stroke compensation mechanism is provided on the first conversion mechanism, which simplifies the connection between the transmission mechanism and the flexible shaft while ensuring the required stroke compensation. A first bracket, a second bracket, and a third bracket are provided within the cabinet to assist in securing the flexible shaft and prevent it from swinging unnecessarily. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1-2 It is a structural schematic diagram of a mechanism for remotely operating a circuit breaker according to the present invention;

[0030] Figure 3 It is a structural diagram of a mechanism for remotely operating a circuit breaker of the present invention (including only the first circuit breaker);

[0031] Figure 4-5 It is an operation diagram of a mechanism for remotely operating a circuit breaker according to the present invention;

[0032] Figure 6 It is a structural schematic diagram of a first conversion mechanism in a mechanism of a remotely operated circuit breaker of the present invention;

[0033] Figure 7 It is a structural schematic diagram of a second conversion mechanism in a mechanism of a remotely operated circuit breaker of the present invention;

[0034] Figure 8-9 It is a structural schematic diagram of a flexible shaft in a mechanism of a remotely operated circuit breaker of the present invention; Figure 10 This is a structural diagram of the handle mechanism and transmission mechanism in a remote-operated circuit breaker mechanism of the present invention (installed on the right side wall of the cabinet);

[0035] Figure 11 This is a structural diagram of the handle mechanism and transmission mechanism in a remote-operated circuit breaker mechanism of the present invention (installed on the left side wall of the cabinet);

[0036] Figure 12 It is a structural schematic diagram of a transmission component in a mechanism of a remotely operated circuit breaker of the present invention;

[0037] Figure 13 This is a schematic structural diagram of a connecting rod in a mechanism of a remotely operated circuit breaker according to the present invention;

[0038] Figure 14 It is a structural schematic diagram of a fastening bolt in a mechanism of a remotely operated circuit breaker of the present invention;

[0039] Figure 15 The present invention is a schematic diagram of the structure of a stroke compensation connector and connectors in a mechanism of a remotely operated circuit breaker. DETAILED DESCRIPTION

[0040] The following is combined with Figures 1 to 15 The following embodiments are provided to further illustrate the specific implementation of the mechanism of a remote-operated circuit breaker of the present invention. The mechanism of a remote-operated circuit breaker of the present invention is not limited to the description of the following embodiments.

[0041] A mechanism for remotely operating a circuit breaker includes an enclosed cabinet 1, with at least two circuit breakers mounted on a side wall within the cabinet 1. The swinging of the circuit breaker handle can be controlled by a remote operating mechanism to close or open the circuit breaker. The remote operating mechanism includes a handle mechanism 7, a transmission mechanism, a flexible shaft 5, and a conversion mechanism connected in sequence. The handle mechanism 7 is disposed outside the cabinet 1, and the flexible shaft 5, the transmission mechanism, and the conversion mechanism are disposed within the cabinet 1. One end of the flexible shaft 5 connected to the transmission mechanism serves as a connecting end 53, and one end of the flexible shaft 5 connected to the conversion mechanism serves as a driving end. The handle mechanism 7 is connected to the connecting end 53 of the flexible shaft 5 via the transmission mechanism disposed on the side wall of the cabinet 1. Operating the handle mechanism 7 causes the flexible shaft 5, under the action of the transmission mechanism, to cooperate with the conversion mechanism at the driving end to operate the circuit breaker handle.

[0042] The circuit breaker in the cabinet 1 includes at least a first circuit breaker 21 and a second circuit breaker 22. The stroke length of the first circuit breaker handle is smaller than the stroke length of the second circuit breaker handle. The remote operating mechanism is provided with a stroke compensation structure for compensating for the difference in stroke length between the first circuit breaker handle and the second circuit breaker handle.

[0043] like Figure 1-14 In the illustrated embodiment 1, the multiple circuit breakers in the cabinet 1 include at least a first circuit breaker 21 and a second circuit breaker 22, the number of each of the first circuit breaker 21 and the second circuit breaker 22 being at least one, and the first circuit breaker handle and the second circuit breaker handle have different swing strokes. The conversion mechanism includes a first conversion mechanism 3 and a second conversion mechanism 4 coupled to the first circuit breaker handle and the second circuit breaker handle, respectively. The flexible shaft 5 includes a first driving end 51 and a second driving end 52 connected to the first conversion mechanism 3 and the second conversion mechanism 4, respectively. The first conversion mechanism 3 is provided on the first circuit breaker 21, and the second conversion mechanism 4 is provided on the second circuit breaker 22. A stroke compensation structure for coordinating the swing stroke of the circuit breaker handle is provided on the first conversion mechanism 3. The operating handle mechanism 7 drives the first driving end 51 and the second driving end 52 of the flexible shaft 5 to move the same stroke, while the movement stroke of the first circuit breaker handle is smaller than the movement stroke of the second circuit breaker handle. The stroke compensation structure is used to compensate for the stroke length difference between the first circuit breaker handle and the second circuit breaker handle.

[0044] A preferred embodiment of a stroke compensation structure is that the first conversion mechanism 3 includes a first sliding mechanism and a stroke compensation structure cooperating with the first sliding mechanism, the stroke compensation structure includes a third sliding mechanism, the first driving end 51 of the flexible shaft 5 is connected to the third sliding mechanism, and the third sliding mechanism drives the first circuit breaker handle through the first sliding mechanism; the second conversion mechanism 4 includes a second sliding mechanism, and the second driving end 52 of the flexible shaft 5 drives the second circuit breaker handle through the second sliding mechanism; before the first sliding mechanism starts to move, the third sliding mechanism can be continued to be driven by the first driving end 51 to move relative to the first sliding mechanism, so as to compensate for the difference in stroke length between the first circuit breaker handle and the second circuit breaker handle.

[0045] Specific as Figure 6 As shown, the first conversion mechanism 3 includes a first sliding mechanism, which includes a first supporting panel 31 and a first slider 32 that can slide on the first supporting panel 31. A first sliding structure for sliding cooperation between the first slider 32 and the first supporting panel 31 is provided, and the third sliding mechanism includes a push plate 33 that can slide relative to the first slider 32. The first support panel 31 is arranged on the front side of the first circuit breaker 21, the first slider 32 is arranged above the first support panel 31, and the push plate 33 is arranged above the first slider 32. The first slider 32 is located between the first support panel 31 and the push plate 33. The push plate 33 can slide relatively on the first slider 32 which is in a stationary state. The first slider 32 can slide on the first support panel 31 to operate the first circuit breaker handle. The push plate 33 is provided with a first connecting portion 331 fixedly connected to the first driving end 51. After the first slider 32 stops sliding relative to the first support panel 31 or before the first slider 32 slides relative to the first support panel 31, the push plate 33 can move relative to the first slider 32 under the action of the first driving end 51. The movement of the push plate 33 relative to the first slider 32 compensates for the difference in stroke length between the first circuit breaker handle and the second circuit breaker handle, ensuring that the movement stroke of the first driving end 51 and the second driving end 52 are equal.

[0046] The relative sliding movement of the first slider 32 and the push plate 33 is achieved by the cooperation of a guide portion 323 and a strip guide groove 332. The guide portion 323 and the strip guide groove 332 are respectively provided on the first slider 32 and the push plate 33. Preferably, the strip guide groove 332 is provided on the push plate 33, and the guide portion 323 is provided on the first slider 32. The length of the strip guide groove 332 is preferably equal to the difference between the travel lengths of the first circuit breaker handle and the second circuit breaker handle. When the first slider 32 is in a stationary state, that is, before the first slider 32 begins to move or after it stops moving, the first driving end 51 drives the push plate 33 to move relative to the first slider 32. At this time, the guide portion 323 slides along the strip guide groove 332. Of course, the guide portion 323 can also be provided on the push plate 33, and the strip guide groove 332 on the first slider 32.

[0047] like Figure 7 As shown, the second conversion mechanism 4 includes a second sliding mechanism, which includes a second support panel 41 and a second slider 42 that can slide on the second support panel 41. A second sliding structure for sliding cooperation between the second slider 42 and the second support panel 41 is provided. The second support panel 41 is arranged on the front side of the second circuit breaker 22. The second driving end 52 of the flexible shaft 5 is fixedly connected to the second slider 42. When the operating handle mechanism 7 causes the flexible shaft 5 to move in the cabinet 1, the second slider 42 slides on the second support panel 41 under the action of the second driving end 52.

[0048] The remote operating device of the present invention includes a first conversion mechanism and a second conversion mechanism. A stroke compensation structure is provided on the first conversion mechanism. When the motion strokes of the circuit breaker handles within the cabinet are inconsistent, the stroke compensation structure compensates for the difference in motion strokes between the circuit breaker handles. This allows multiple circuit breakers to be controlled by a single remote operating device, avoiding excessive space occupation and interference, and reducing operational difficulty and installation costs. Furthermore, the stroke compensation structure on the conversion mechanism simplifies the connection between the transmission mechanism and the flexible shaft.

[0049] In this embodiment, compensation is achieved by the first driving end 51 driving the push plate 33 to move relative to the first slider 32 before the first slider 32 starts moving or after the first slider 32 stops moving. The timing of the push plate 33 moving relative to the first slider 32 depends on the relative positions of the first circuit breaker handle and the second circuit breaker handle. The push plate 33 moves later or earlier than the first slider 32. Specifically,

[0050] When the first slider 32 and the second slider 42 move simultaneously, the first slider 32 stops first after completing the operation of the first circuit breaker handle due to the short stroke of the first slider 32. At this time, the push plate 33 starts to slide relatively to compensate for the stroke difference until the second slider 42 completes the operation of the second circuit breaker handle and stops at the same time; when the second slider 42 and the push plate 33 move simultaneously, the relative sliding of the push plate 33 is used to compensate for the stroke difference. After the stroke difference is compensated, the relative movement of the push plate 33 stops. At this time, the first slider 32 starts to move to operate the first circuit breaker handle until the second slider 42 completes the operation of the second circuit breaker handle, and then they stop moving together.

[0051] The first conversion mechanism 3 includes a first support panel 31, a first slider 32, and a push plate 33. The first support panel 31 is disposed on the front face of the first circuit breaker 21. A first sliding structure is disposed between the first support panel 31 and the first slider 32. The first support panel 31 is provided with a first opening 311 parallel to the first sliding structure. The first opening 311 allows the first circuit breaker handle to pass through and swing within the first opening 311. The first slider 32 is provided with a first operating portion 321. When the first slider 32 slides relative to the first support panel 31, the first operating portion 321 is used to actuate the first circuit breaker handle to open or close the circuit breaker. The push plate 33 slidably engages with the first slider 32. After the first slider 32 stops moving or before the first slider 32 begins moving, the push plate 33 can be driven by the first driving end 51 to continue moving relative to the first slider 32. The relative movement of the push plate 33 equalizes the travel of the first driving end 51 with the travel of the second driving end, thereby compensating for the difference in travel length between the first and second circuit breaker handles.

[0052] As an embodiment, the first sliding structure is that a first sliding groove 312 is provided on the first supporting panel 31, a first connecting portion 331 and a strip guide groove 332 are provided on the push plate 33, a first operating portion 321 opposite to the first opening 311 is provided in the middle of the first slider 32, and a first sliding portion 322 and a guide portion 323 are respectively provided on both sides of the first operating portion 321, the first sliding portion 322 slides in cooperation with the first sliding groove 312 provided on the first supporting panel 31, and the guide portion 323 slides in cooperation with the strip guide groove 332 provided on the push plate 33, and before the first slider 32 stops moving on the first supporting panel 31 or starts moving, the guide portion 323 slides in cooperation with the strip guide groove 332 to make the movement stroke of the first driving end 51 and the second driving end 52 equal, thereby compensating for the difference in stroke length between the first circuit breaker handle and the second circuit breaker handle. In this embodiment, the first sliding structure includes a first sliding groove 312 arranged on the first supporting panel 31 and a fixed shaft arranged on the first slider 32 as a first sliding part 322, and the fixed shaft extends into the first sliding groove 312 for sliding engagement; of course, as another embodiment, the first sliding structure can also be a first sliding part 322 arranged on the first supporting panel 31 and a first sliding groove 312 arranged on the first slider 32.

[0053] The optimal combination of the first conversion mechanism 3 is as follows Figure 6 As shown, the first slider 32 is located between the first support panel 31 and the push plate 33. A fixed shaft facing the first support panel 31 is installed on one side of the first slider 32 as a first sliding portion 322, and a fixed shaft facing the push plate 33 is installed on the other side of the first slider 32 as a guide portion 323. The first operating portion 321 is preferably as shown in FIG. Figure 6 As shown, the first operating portion 321 is preferably a recessed groove extending through the first slider 32, opposite the first opening 311. The first circuit breaker handle extends through the first opening 311 into the recessed groove serving as the first operating portion 321. The recessed groove of the first operating portion 321 allows the first circuit breaker handle to be closed or opened when the first slider 32 slides. Alternatively, the first operating portion 321 may be a recessed groove disposed on a side of the first slider 32 proximal to the first circuit breaker 21. The first circuit breaker handle can be operated by the first slider 32 by simply snapping into the recessed groove. It should be noted that the relative positions of the first support panel 31, the first slider 32, and the push plate 33 are relatively flexible. The push plate 33 can be located between the first support panel 31 and the first slider 32, or can be located side by side with the first slider 32 on the first support panel 31. Alternatively, the push plate 33 and the first slider 32 can be located on either side of the first support panel 31. However, this structure increases the difficulty of installing the first support panel 31 on the first circuit breaker 21.

[0054] The first support panel 31 is rectangular in shape as a whole. The edge of the first support panel 31 is bent toward the first circuit breaker 21 to form a first mounting portion 313. The first mounting portion 313 is used to mount the first support panel 31 on the first circuit breaker 21. A first opening 311 is provided in the middle of the first support panel 31 for the first circuit breaker handle to pass through. A first sliding groove 312 is provided parallel to one side of the first opening 311. The first sliding groove 312 is used to slide with the first slider 32. A flexible guide 312 is provided on the first support panel 31 to assist in fixing the flexible guide 312. The first bracket 34 of the shaft 5 is vertically fixed to one side of the first supporting panel 31 and opposite to the push plate 33. The first bracket 34 is provided with an avoidance hole 342 for the push plate 33 to pass through and a first assembly groove 341 for the first driving end 51 of the flexible shaft 5 to pass through. Preferably, the first assembly groove 341 is an arc groove arranged on the edge of the first bracket 34, and the first assembly groove 341 and the first connecting portion 331 keep the central axis coincident, so that the first driving end 51 of the flexible shaft 5 can make a linear motion after passing through the first assembly groove 341.

[0055] The first slider 32 has two sides of different widths. The edge of the wider side of the first slider 32 can be abutted against the first bracket 34 on the first support panel 31. A groove is provided in the middle of the first slider 32 as the first operating part 321. Preferably, the upper and lower edges of the groove are bent toward the first support panel 31 to enhance the connection stability with the first circuit breaker handle. A fixed axis serving as the first sliding part 322 is provided on the narrower side of the first slider 32. In the figure, the number of guide parts of the first sliding part 322 is two, and a fixed axis serving as a guide part 323 is provided on the wider side of the first slider 32. The number of guide parts 323 is also two. Preferably, the spacing between the two guide parts 323 is greater than the spacing between the two first sliding parts 322.

[0056] The push plate 33 is generally strip-shaped. One end of the push plate 33 is bent to form a first connecting portion 331, which is fixedly connected to the first driving end 51. A strip guide groove 332 is provided in the middle of the push plate 33 for slidingly engaging with the guide portion 323 of the first slider 32. The other end of the push plate 33 can pass through the avoidance hole 342 in the first bracket 34 to prevent the first bracket 34 from interfering with the movement of the push plate 33. When the first driving end 51 of the flexible shaft 5 drives the push plate 33 to slide, the two ends of the strip guide groove 332 respectively engage with the guide portion 323 of the first slider 32 to drive the first slider 32 to slide, allowing the push plate 33 to move relative to the first slider 32 to compensate for the difference in travel between the first and second circuit breaker handles. Of course, the strip guide groove 332 can also be provided on the first slider 32, with the guide portion 323 provided on the first slider 32.

[0057] The second conversion mechanism 4 includes a second sliding mechanism, which includes a second support panel 41 and a second slider 42. The second support panel 41 is arranged on the front of the second circuit breaker 22. A second sliding structure is provided between the second support panel 41 and the second slider 42 so that the second slider 42 can slide on the second support panel 41. A second opening parallel to the second sliding structure is provided on the second support panel 41. The second opening is for the second circuit breaker handle to pass through and can swing within the second opening; the second slider 42 is provided with a second connecting portion 423 and a second operating portion 421. When the second slider 42 and the second support panel 41 slide relative to each other, the second operating portion 421 is used to operate the second circuit breaker handle to open or close.

[0058] As an embodiment, the second sliding structure is provided with a second slide groove 411 on the second support panel 41, a second operating portion 421 is provided in the middle of the second slider 42, and a second sliding portion 422 is provided on both sides of the second operating portion 421. The second sliding portion 422 slidably engages with the second slide groove 411 provided on the second support panel 41. Of course, as another embodiment, the second sliding structure can also be provided with the second sliding portion 422 on the second support panel 41 and the second slide groove 411 on the second slider 42.

[0059] The second conversion mechanism 4 is as follows Figure 7 As shown, the second slider 42 is located on the second support panel 41. Fixed shafts facing the second support panel 41 are installed on both sides of the second slider 42 as second sliding parts 422. The second operating part 421 provided on the second slider 42 is preferably as shown in FIG. Figure 7 The second operating portion 421 is shown opposite to the second opening (not shown), and is preferably a groove extending through the second slider 42. The second circuit breaker handle extends into the groove through the second opening. The groove serving as the second operating portion 421 drives the second circuit breaker handle when the second slider 42 slides to open or close the circuit breaker. Of course, the second operating portion 421 can be a groove that is not provided through, and the groove is provided on the side of the second slider 42 near the second circuit breaker 22. The second circuit breaker handle is engaged in the groove and is operated by the second slider 42.

[0060] Specifically, the second support panel 41 is rectangular as a whole, and the edge of the second support panel 41 is bent toward the second circuit breaker 22 to form a second mounting portion 412, and the second mounting portion 412 is used to mount the second support panel 41 on the second circuit breaker 22; a second opening for the second circuit breaker handle to pass through is provided in the middle of the second support panel 41, and second slide grooves 411 are provided in parallel on both sides of the second opening, and the second slide grooves 411 are used to slide with the second slider 42; a second bracket 43 for auxiliary fixing of the flexible shaft 5 is provided on the second support panel 41, and the second bracket 43 is vertically fixed to one side of the second support panel 41, and a second assembly groove 431 for the second driving end 52 of the flexible shaft 5 to pass through is provided on the second bracket 43, preferably, the second assembly groove 431 is an arc groove provided on the edge of the second bracket 43, and the second assembly groove 431 keeps the central axis coincident with the first connecting portion 331, so that the second driving end 52 of the flexible shaft 5 can make a linear motion after passing through the second assembly groove 431.

[0061] The second slider 42 is rectangular as a whole, and a groove is provided in the middle of the second slider 42 as the second operating portion 421. Preferably, the upper and lower edges of the groove are bent toward the second support panel 41 to enhance the stability of the connection with the second circuit breaker handle. Fixed shafts serving as the second sliding portion 422 are provided on both sides of the second slider 42. There are two second sliding portions 422 on each side, which are symmetrically arranged on both sides of the second operating portion 421. The upper or lower edge of the second slider 42 is bent away from the second support panel 41. The bend serves as the second connecting portion 423. The edge of the second slider 42 opposite to the second connecting portion 423 is used to cooperate with the second bracket 43 to abut against the second slider 42 to stop the movement of the second slider 42. Figure 7 As shown, the bend on the upper side of the second operating portion 421 serves as the second connecting portion 423, and the second connecting portion 423 is arranged opposite to the second bracket 43; the edge on the lower side of the second operating portion 421 is used to cooperate with the second bracket 43. In the figure, the edge on the side close to the second bracket 43 is used to cooperate with the second bracket 43, and extends on the side away from the second bracket 43 to form an extension portion 424. The extension portion 424 preferably forms a bend opposite to the second connecting portion 423, and a notch is provided on the second bracket 43 to avoid the extension portion 424.

[0062] like Figure 8-9As shown, the end of the flexible shaft 5 connected to the transmission mechanism serves as the connection end 53, and the end of the flexible shaft 5 connected to the conversion mechanism serves as the drive end. The number of the drive ends corresponds to the number of conversion mechanisms in the cabinet 1. As mentioned above, the conversion mechanism in the cabinet 1 includes a first conversion mechanism 3 and a second conversion mechanism 4, and the corresponding drive ends include a first drive end 51 connected to the first conversion mechanism 3, and a second drive end 52 connected to the second conversion mechanism 4. The structures of the first drive end 51 and the second drive end 52 are exactly the same, but considering the space occupied in the cabinet 1, the flexible shaft 5 with the first drive end 51 and the flexible shaft 5 with the second drive end 52 may differ in length. The number of the flexible shafts 5 corresponds to the number of conversion mechanisms. The connection end 53 of each flexible shaft 5 is commonly connected to the transmission mechanism, and the drive end of each flexible shaft 5 is correspondingly connected to a conversion mechanism.

[0063] Specifically, the flexible shaft 5 includes a protective sheath 54 and an axis core. The two ends of the protective sheath 54 serve as fixed ends and are fixedly connected to the transmission mechanism and the conversion mechanism respectively. The protective sheath 54 is wrapped around the outside of the axis core and the axis core and the protective sheath 54 slide together. The two ends of the axis core serve as movable ends and pass through the two fixed ends of the protective sheath 54 respectively. One of the movable ends is connected to the transmission mechanism as a connecting end 53, and the other movable end serves as a driving end. When the driving end extends out of the protective sheath 54, the connecting end retracts into the protective sheath 54. When the driving end retracts into the protective sheath 54, the connecting end extends out of the protective sheath.

[0064] like Figure 10-11 As shown, the transmission mechanism includes a third bracket 62 and a transmission member 61 rotatably supported on the third bracket 62. The third bracket 62 is supported and fixed in the cabinet 1. The transmission member 61 is rotatably mounted on the third bracket 62 via a rotating shaft. One end of the transmission member 61 is fixedly connected to the handle mechanism 7, and the other end of the transmission member 61 is rotatably connected to the connecting end 53 of the flexible shaft 5. The operating handle mechanism 7 causes the transmission member 61 to rotate around the rotating shaft under the drive of the handle mechanism 7. The flexible shaft 5 connected to the transmission member 61 moves in the cabinet 1 under the rotation of the transmission member 61 and drives the conversion mechanism to close or open the circuit breaker handle.

[0065] The transmission member 61 is as follows Figure 12 The overall shape is triangular, the first corner of the transmission member 61 is fixedly connected to the handle mechanism 7, the second corner of the transmission member 61 is rotatably connected to the third bracket 62 via a rotating shaft, and the third corner of the transmission member 61 is rotatably connected to the connecting end 53 of the flexible shaft 5. Specifically, the third corner of the transmission member 61 and the connecting end 53 are hinged via a connecting shaft.

[0066] The third bracket 62 can cooperate with the first bracket 34 and the second bracket 43 to assist in fixing the flexible shaft 5. When the flexible shaft 5 is not provided with a protective sheath 54, the first driving end 51 and the second driving end 52 are prevented from swinging excessively in the cabinet 1 by the cooperation of the first assembly groove 341 and the second assembly groove 431 respectively. The third bracket 62 can be provided with an annular structure similar to the first assembly groove 341 or the second assembly groove 431 so that the flexible shaft 5 can slide therein. Figure 8-9 When a protective sheath 54 is provided as shown, the auxiliary fixation of the three brackets is specifically as follows: the first bracket 34 and the second bracket 43 are used to auxiliary fix the two protective sheaths 54 close to the fixed ends of the conversion mechanism, and the two fixed ends are respectively fixed to the first assembly groove 341 and the second assembly groove 431 by nuts, and the shaft cores of the first driving end 51 and the second driving end 52 pass through the two fixed ends respectively. The third bracket 62 is used to fix the other fixed ends of the two protective sheaths 54, and the protective sheath 54 is fixed to the third bracket 62 by clips and screws. The shaft core of the connecting end 53 of the flexible shaft 5 is rotatably connected to the transmission member 61. In this embodiment, the connecting ends 53 are exactly the same.

[0067] like Figure 10-11 As shown, the handle mechanism 7 includes a flange 71 and a handle 72 rotatably connected to the flange 71. The flange 71 is a cast bracket or support. The flange 71 is arranged on the outer wall of the cabinet 1. Holes for installing screws are provided on the flange 71. The flange 71 is installed on the cabinet 1 by screws, preferably on the door edge of the cabinet 1. A sealing gasket is provided between the flange 71 and the door edge of the cabinet 1. A connecting rod 73 is provided inside the flange 71. The connecting rod 73 passes through the side wall of the cabinet 1 and extends into the interior of the cabinet 1. One end of the connecting rod 73 is rotatably connected to the handle 72 outside the cabinet 1 as a connecting outer end 731, and the other end of the connecting rod 73 is fixedly connected to the transmission mechanism inside the cabinet 1 as a connecting inner end 732. When the operating handle 72 moves in the positive direction, the connecting inner end 732 moves in the direction away from the flange 71. When the operating handle 72 rotates in the reverse direction, the connecting outer end 731 moves in the direction close to the flange 71. The handle mechanism 7 can be installed on the left side wall of the cabinet 1 , and can also be installed on the right side wall of the handle mechanism 7 .

[0068] Combine Figure 4-5Explain its working principle: when the operating handle 72 moves forward, as shown in the figure, the handle 72 is rotated counterclockwise, the handle 72 causes the connecting inner end 732 of the connecting rod 73 to move away from the flange 71, and the connecting rod 73 acts on the first corner of the transmission member 61 to cause the transmission member 61 to rotate counterclockwise around the rotating shaft connected to the second corner of the transmission member 61. At this time, the third corner of the transmission member 61 drives the connecting end 53 of the flexible shaft 5 to move downward. After the transmission of the flexible shaft 5, the first driving end 51 and the second driving end 52 of the flexible shaft 5 respectively drive the first slider 32 and the second slider 42 to move upward. However, since the movement stroke of the first circuit breaker handle is smaller than that of the second circuit breaker handle, the first circuit breaker handle 72 is rotated counterclockwise. The movement stroke of the circuit breaker handle is that the movement stroke of the first slider 32 is smaller than the movement stroke of the second slider 42. Therefore, after the first slider 32 stops moving or before it starts moving, the first driving end 51 drives the push plate 33 to slide relative to the first slider 32 until the second driving end 52 stops driving the second slider 42 to slide. The relative sliding of the push plate 33 keeps the movement strokes of the first driving end 51 and the second driving end 52 equal, thereby compensating for the difference in the stroke length of the first circuit breaker handle and the stroke length of the second circuit breaker handle, thereby making the upward movement of the first slider 32 and the second slider 42 start at the same time but end at different times, or start at different times but end at the same time. Similarly, when the operating handle 72 performs reverse movement, which is shown in the figure as rotating the handle 72 clockwise, the handle 72 causes the connecting inner end 732 of the connecting rod 73 to move in the direction close to the flange 71, and the connecting rod 73 acts on the first corner of the transmission member 61 to cause the transmission member 61 to rotate clockwise around the rotating shaft connected to the second corner of the transmission member 61. At this time, the third corner of the transmission member 61 drives the connecting end 53 of the flexible shaft 5 to move upward. After the transmission of the flexible shaft 5, the first driving end 51 and the second driving end 52 of the flexible shaft 5 respectively drive the first slider 32 and the second slider 42 to move downward. After the first slider 32 stops moving or before it starts moving, the first driving end 51 drives the push plate 33 to slide relative to the first slider 32 until the second driving end 52 stops driving the second slider 42 to slide. The relative sliding of the push plate 33 makes the movement strokes of the first driving end 51 and the second driving end 52 equal, thereby compensating for the difference in the stroke length of the first circuit breaker handle and the stroke length of the second circuit breaker handle. Accordingly, the downward movement of the first slider 32 and the second slider 42 do not start at the same time but end at the same time, and there is a time difference in the movement process of the first slider 32 and the second slider 42.

[0069] like Figure 10-14As shown, the transmission mechanism and the handle mechanism 7 are fixedly connected by a fastening bolt 8 and a tail 82 nut that cooperate with each other. The fastening bolt 8 includes a head 81 and a tail 82 for limiting the axial movement of the fastening bolt 8. The tail 82 is provided with an external thread for installing the tail 82 nut. A fastening portion 83 is provided in the middle of the fastening bolt 8. A connecting hole 611 that cooperates with the fastening bolt 8 is provided on the transmission member 61 of the transmission mechanism and the connecting rod 73 of the handle mechanism 7. The connecting hole 611 has a limiting portion 612 that cooperates with the fastening portion 83. The limiting portion 612 cooperates with the fastening portion 83 to limit the radial rotation of the fastening bolt 8 when the tail 82 nut is installed.

[0070] The transmission member 61 of the transmission mechanism and the connecting rod 73 of the handle mechanism 7 are fixed with a specially set fastening bolt 8. A fastening portion 83 is provided on the fastening bolt 8. The fastening portion 83 cooperates with the limiting portion 612 of the connecting hole 611 to limit the radial rotation of the fastening bolt 8. In this way, when installing the tail 82 nut in a narrow space, the fastening bolt 8 can be fixed without using tools such as wrenches, thereby simplifying the installation process.

[0071] The fastening bolt 8 includes a head 81 and a rod body connected as one body, the diameter of the head 81 is larger than the diameter of the rod body, one end of the rod body is connected to the head 81, and the other end of the rod body serves as a tail 82 and is provided with an external thread for installing a nut of the tail 82. The fastening part 83 is located at the part of the rod body close to the head 81.

[0072] The fastening portion 83 and the limiting portion 612 preferably adopt a concave-convex fit, and the fastening portion 83 is a protrusion protruding from the side wall of the fastening bolt 8, and the limiting portion 612 of the connecting hole 611 is a groove matching the fastening portion 83. Of course, the fastening portion 83 can also be a groove structure arranged in the middle of the fastening bolt 8, and the limiting portion 612 is a protruding structure protruding from the edge of the connecting hole 611.

[0073] Specific as Figure 14 As shown, the fastening bolt 8 includes a head 81 and a rod body connected together. The rod body is in a stepped shape with one end thicker and the other end thinner. The thinner part of the rod body is provided with an external thread as a tail 82, and the thicker part of the rod body is provided as a transition section 84 for connecting with the head 81. A fastening portion 83 is provided on the side wall of the transition section 84. Figure 14 As shown, the fastening portion 83 is a two protruding protrusion structure, which is connected to the head 81 and symmetrically arranged on the transition section 84. Preferably, the axial length of the fastening portion 83 is less than the axial length of the transition section 84. After the nut of the tail 82 is installed, the space between the fastening portion 83 and the nut is filled by a washer. Correspondingly, grooves serving as limiting portions 612 are symmetrically provided on the edge of the connecting hole 611. Since the fastening portion 83 is a rectangular protrusion, the corresponding limiting portion 612 is a rectangular groove. Figure 12As shown, the transmission member 61 of the transmission mechanism is triangular in shape as a whole, and its first corner is used for fixed connection with the connecting rod 73 of the handle mechanism 7. The connecting hole 611 provided at the first corner is circular in shape as a whole, and rectangular grooves are provided on the two opposite edges of the connecting hole 611 as limiting portions 612 that cooperate with the fastening portion 83; Figure 13 As shown, the inner connecting end 732 of the connecting rod 73 is also provided with a connecting hole 611 having the same shape as that of the first corner of the transmission member 61. It should be noted that the number of fastening portions 83 is not limited to two, the arrangement of the fastening portions 83 on the fastening bolt 8 is not limited to a symmetrical arrangement, and the shape of the fastening portion 83 is not limited to a rectangular protrusion.

[0074] It should be noted that since the fastening bolt 8 and the nut at the tail portion 82 are used to securely connect the transmission mechanism and the handle mechanism 7, the fastening bolt 8 and the nut at the tail portion 82 can also be used when the handles of multiple circuit breakers within the cabinet 1 have the same travel range. Therefore, when identical circuit breakers are installed within the cabinet 1, the conversion mechanism provided on each circuit breaker is the second conversion mechanism 4, and the drive end connected to the second conversion mechanism 4 is the second drive end 52. In this case, the second conversion mechanism 4 includes a second support panel 41 and a second slider 42. The second support panel 41 is provided on the front of the circuit breaker. A second sliding structure is provided between the second support panel 41 and the second slider 42, allowing the second slider 42 to slide on the second support panel 41. The second support panel 41 is provided with a second opening parallel to the second sliding structure. The second opening allows the circuit breaker handle to pass through and swing within the second opening. The second slider 42 is provided with a second connecting portion 423 and a second operating portion 421. When the second slider 42 slides relative to the second support panel 41, the second operating portion 421 is used to open or close the circuit breaker handle.

[0075] Specifically, the second support panel 41 is rectangular as a whole, and the edge of the second support panel 41 is bent toward the circuit breaker to form a second mounting portion 412, and the second mounting portion 412 is used to mount the second support panel 41 on the circuit breaker; a second opening for the circuit breaker handle to pass through is provided in the middle of the second support panel 41, and second slide grooves 411 are provided in parallel on both sides of the second opening, and the second slide grooves 411 are used to slide with the second slider 42; a second bracket 43 is provided on the second support panel 41 to assist in fixing the flexible shaft 5, and the second bracket 43 is vertically fixed to one side of the second support panel 41, and a second assembly groove 431 is provided on the second bracket 43 for the second driving end 52 of the flexible shaft 5 to pass through, preferably, the second assembly groove 431 is an arc groove provided on the edge of the second bracket 43, and the second assembly groove 431 keeps the central axis coincident with the second connecting portion 423, so that the second driving end 52 of the flexible shaft 5 can make a linear motion after passing through the second assembly groove 431.

[0076] The second slider 42 is rectangular as a whole, and a groove is provided in the middle of the second slider 42 as the second operating portion 421. Preferably, the upper and lower edges of the groove are bent toward the second support panel 41 to enhance the stability of the connection with the circuit breaker handle. Fixed shafts serving as the second sliding portion 422 are provided on both sides of the second slider 42. There are two second sliding portions 422 on each side, which are symmetrically arranged on both sides of the second operating portion 421. The upper or lower edge of the second slider 42 is bent away from the second support panel 41. The bend serves as the second connecting portion 423. The edge of the second slider 42 opposite to the second connecting portion 423 is used to cooperate with the second bracket 43 to abut against the second slider 42 to stop the movement of the second slider 42. Figure 7 As shown, the bend on the upper side of the second operating portion 421 serves as the second connecting portion 423, and the second connecting portion 423 is arranged opposite to the second bracket 43; the edge on the lower side of the second operating portion 421 is used to cooperate with the second bracket 43. In the figure, the edge on the side close to the second bracket 43 is used to cooperate with the second bracket 43, and extends on the side away from the second bracket 43 to form an extension portion 424. The extension portion 424 preferably forms a bend opposite to the second connecting portion 423, and a notch is provided on the second bracket 43 to avoid the extension portion 424.

[0077] Embodiment 2 (not shown in the figures of this embodiment): A first circuit breaker 21 and a second circuit breaker 22 are provided in the cabinet 1, and the swing stroke of the first circuit breaker handle 21 is smaller than the swing stroke of the second circuit breaker handle 22. The conversion mechanism includes a first conversion mechanism 3 and a second conversion mechanism 4 coupled to the first circuit breaker handle and the second circuit breaker handle, respectively. The flexible shaft 5 includes a first driving end 51 and a second driving end 52 connected to the first conversion mechanism 3 and the second conversion mechanism 4, respectively. A stroke compensation structure for coordinating the swing stroke of the circuit breaker handle is provided on the first conversion mechanism 3. The difference between the first conversion mechanism 3 and the embodiment 1 is that the stroke compensation structure is directly provided on the first sliding mechanism, and no third sliding mechanism is provided.

[0078] The first conversion mechanism 3 includes a first sliding mechanism provided with a stroke compensation mechanism, the first sliding mechanism includes a first slider 32 provided with a first operating part 321, and a stroke compensation groove is provided on the first operating part 321. When the first driving end 51 and the second driving end 52 simultaneously drive the first slider 32 and the second slider 42, when the first operating part 321 operates the first circuit breaker handle, the stroke compensation groove is used to compensate for the swing stroke difference between the first circuit breaker handle and the second circuit breaker handle.

[0079] Specifically, the first conversion mechanism 3 includes a first support panel 31 and a first slider 32. The first support panel 31 is provided on the front of the first circuit breaker 21. A first sliding structure is provided between the first support panel 31 and the first slider 32. A first opening 311 parallel to the first sliding structure is provided on the first support panel 31. The first opening 311 allows the first circuit breaker handle to pass through and can swing within the first opening 311. A first connecting portion 331 is provided on the first slider 32. The first connecting portion 331 is fixedly connected to the first driving end 51. A first operating portion 321 is provided. The first operating portion 321 reserves a swinging space as a stroke compensation groove in the swinging direction of the first circuit breaker handle. The stroke compensation grooves are symmetrically located on both sides of the first operating portion 321. Preferably, the first operating portion 321 has a groove structure. In this way, the groove structure of the first operating portion 321 and the stroke compensation groove are connected to form a first groove. The groove is much larger than the swing stroke of the first circuit breaker handle. The two side edges of the groove serve as the specific operating parts of the first circuit breaker handle. Preferably, the midpoints of the strokes of the first circuit breaker handle and the second circuit breaker handle are located on the same straight line.

[0080] The second conversion mechanism 4 includes a second support panel 41 and a second slider 42. The second support panel 41 is arranged on the front side of the second circuit breaker 22. A second sliding structure is provided between the second support panel 41 and the second slider 42 so that the second slider 42 can slide on the second support panel 41. A second opening parallel to the second sliding structure is provided on the second support panel 41. The second opening is for the second circuit breaker handle to pass through and can swing within the second opening; the second slider 42 is provided with a second connecting portion 423 and a second operating portion 421. When the second slider 42 and the second support panel 41 slide relative to each other, the second operating portion 421 is used to operate the second groove for opening or closing the second circuit breaker handle. Preferably, the first groove and the second groove are of the same length.

[0081] The structures of the flexible shaft 5 and the handle mechanism 7 are the same as those in the first embodiment, and the connection method of the flexible shaft 5 with the conversion mechanism and the transmission mechanism is the same.

[0082] The flexible shaft 5 is moved by operating the handle mechanism 7. The first driving end 51 and the second driving end 52 are simultaneously actuated, causing the first slider 32 and the second slider 42 to slide simultaneously. Since the stroke length of the first circuit breaker handle is shorter than the stroke length of the second circuit breaker handle, the first circuit breaker 21 starts later and ends earlier than the second circuit breaker 22. At this time, the action process of the first circuit breaker handle and the second circuit breaker handle is as follows: the second circuit breaker handle has started to move. At this time, the first circuit breaker handle moves in the space serving as the stroke compensation groove (on one side), causing the first circuit breaker handle to start moving later than the second circuit breaker handle. When the first circuit breaker handle has completed its movement in the stroke compensation groove on one side, the first operating portion 321 drives the first circuit breaker handle to move until the operation of the first circuit breaker 21 is completed. After the first circuit breaker handle stops operating the first circuit breaker 21, it enters the stroke compensation groove (on the other side) and moves until its movement in the stroke compensation groove is completed.

[0083] Embodiment 3: A first circuit breaker 21 and a second circuit breaker 22 are installed in a cabinet 1, and the swing stroke of the first circuit breaker handle is smaller than the swing stroke of the second circuit breaker handle. The conversion mechanism includes a first conversion mechanism 3 and a second conversion mechanism 4 coupled to the first circuit breaker handle and the second circuit breaker handle, respectively. The flexible shaft 5 includes a driving end connected to the conversion mechanism and a connecting end 53 connected to the transmission mechanism. The flexible shaft 5 connected between the transmission mechanism and the first conversion mechanism 3 is provided with a stroke compensation structure. The operating handle mechanism 7 drives the flexible shaft 5 to move. The stroke compensation structure is used to compensate for the difference in the stroke length of the first circuit breaker handle and the second circuit breaker handle.

[0084] A first solution of the stroke compensation structure (not shown), the flexible shaft 5 includes a first driving end 51 and a second driving end 52, the first driving end 51 is slidably matched with the first conversion mechanism 3 through the stroke compensation structure, and the second driving end is connected to the second conversion mechanism, and the operating handle mechanism 7 drives the flexible shaft 5 to move to operate the first circuit breaker 21 and the second circuit breaker 22. The stroke compensation structure is used to compensate for the difference in stroke length between the first circuit breaker handle and the second circuit breaker handle.

[0085] Different from the first embodiment, the first conversion mechanism 3 of this embodiment only includes a first sliding mechanism for operating the first circuit breaker handle. Preferably, a compensation groove is provided on the first driving end 51. The length of the compensation groove is the swing stroke difference between the first circuit breaker handle and the second circuit breaker handle. A sliding limit part is provided on the first conversion mechanism 3. The sliding limit part slides with the compensation groove and completes the stroke difference compensation between the first circuit breaker handle and the second circuit breaker handle through relative sliding.

[0086] The first conversion mechanism 3 includes a first support panel 31 and a first slider 32. The first support panel 31 is arranged on the front side of the first circuit breaker 21. A first sliding structure is provided between the first support panel 31 and the first slider 32. The first support panel 31 is provided with a first opening 311 parallel to the first sliding structure. The first opening 311 allows the first circuit breaker handle to pass through and swing within the first opening 311. The first slider 32 is provided with a first operating portion 321. When the first slider 32 and the first support panel 31 slide relative to each other, the first operating portion 321 is used to drive the first circuit breaker handle to open or close the circuit breaker. The first slider 32 is provided with a first connecting portion 331. The first connecting portion 331 serves as a sliding limit portion and slides with the compensation groove of the first driving end 51. Similar to the first embodiment, the second connecting portion 423 of the second conversion mechanism 4 is fixedly connected to the second driving end 52.

[0087] The flexible shaft 5 is moved by operating the handle mechanism 7, and the first driving end 51 and the second driving end 52 move and stop at the same time. However, since a stroke compensation groove is provided on the first driving end 51, the first slider 32 and the second slider 42 cannot start sliding at the same time, and the movement process is similar to that of Example 1.

[0088] The specific movement process is as follows: when the operating handle mechanism 7 causes the flexible shaft 5 to drive the first conversion mechanism 3 and the second conversion mechanism 4 to move, the second slider 42 starts to slide to operate the second circuit breaker handle. At this time, the first connecting portion 331 on the first slider 32, which serves as a sliding limit portion, slides in the compensation groove of the first driving end 51. The first slider 32 and the first support panel 31 remain relatively stationary until the first connecting portion 331 moves from one side of the compensation groove to the other side. The first slider 32 is driven by the other side of the compensation groove to start sliding relative to the first support panel 31 until it stops moving at the same time as the second slider 42; the first driving end 51 moves in the opposite direction. At this time, the first slider 32 is relatively stationary. After the first connecting portion 331 moves from the other side of the compensation groove to one side of the compensation groove, the first slider 32 starts to move under the drive of the first driving end 51 until the second slider 42 stops moving.

[0089] The second scheme of the stroke compensation structure, the flexible shaft 5 includes a first connecting end and a second connecting end, the first connecting end is slidingly connected to the transmission mechanism through the stroke compensation structure, and the second connecting end is rotationally connected to the transmission mechanism, and the operating handle mechanism 7 drives the flexible shaft 5 to move to operate the first circuit breaker 21 and the second circuit breaker 22. The stroke compensation structure is used to compensate for the difference in stroke length between the first circuit breaker handle and the second circuit breaker handle.

[0090] See also Figure 15The first connecting end is provided with a stroke compensation connecting piece 55, and the stroke compensation connecting piece 55 is provided with a compensation groove 551. Preferably, the compensation groove 551 is a strip groove, and the length of the compensation groove 551 is the stroke difference between the first circuit breaker handle and the second circuit breaker handle; the second connecting end is provided with a connecting piece 56, and a connecting matching hole 561 is provided on the connecting piece 56. The connecting matching hole 561 is a circular hole. The connecting shaft passes through the compensation groove 551 and the connection matching hole 561 to install the stroke compensation connecting piece 55 and the connecting piece 56 on the transmission mechanism. The connecting shaft is slidably matched with the compensation groove 551. When the handle mechanism 7 is operated, the connecting shaft slides in the compensation groove 551 to compensate for the difference in stroke length between the first circuit breaker handle and the second circuit breaker handle.

[0091] Unlike the first embodiment, the first drive end 51 and the second drive end 52 have the same structure, and the connection method between the first drive end 51 and the first conversion mechanism 3 is the same as the connection method between the second drive end 52 and the second conversion mechanism 4, both of which are fixed connections. The remaining structure is the same as the first embodiment. Its operation process: The flexible shaft 5 is moved by operating the handle mechanism 7. Due to the stroke compensation structure provided on the first connection end, the operation time of the first drive end 51 is later than that of the second drive end 52. The connecting shaft drives the second connection end to move through the connecting mating hole 561. The second drive end 52, which is linked to the second connection end, drives the second circuit breaker handle to operate. At this time, the connecting shaft first slides in the compensation groove 551. After the connecting shaft contacts a side edge of the compensation groove 551, it drives the first connection end to move. The first drive end 51, which is linked to the first connection end, drives the first circuit breaker handle to operate.

[0092] Embodiment 4 (not shown in the figure of this embodiment): The cabinet 1 includes a first circuit breaker 21 and a second circuit breaker 22, and the swing stroke of the first circuit breaker handle is smaller than the swing stroke of the second circuit breaker handle. The first circuit breaker 21 and the second circuit breaker 22 are connected to the driving end of the flexible shaft 5 through a conversion mechanism. The flexible shaft 5 includes a first connecting end and a second connecting end. The first connecting end and the second connecting end are respectively linked to the first driving end and the second driving end, and the first connecting end and the second connecting end are respectively connected to the transmission mechanism. A stroke compensation structure is provided in the transmission mechanism for compensating for the stroke difference of the circuit breaker handles.

[0093] The transmission mechanism includes a stroke compensation transmission member (not shown in the figure) and a transmission member 61. The stroke compensation transmission member is provided with a stroke compensation groove. The first connection end slides in the stroke compensation groove to compensate for the stroke difference between the circuit breaker handles, and the second connection end is rotationally connected to the transmission member 61.

[0094] The transmission mechanism includes a third bracket 62 and a transmission member 61 and a stroke compensation transmission member that are simultaneously supported and rotated on the third bracket 62. The third bracket 62 is supported and fixed in the cabinet 1. The stroke compensation transmission member and the transmission member 61 are rotatably installed on the third bracket 62 through the same rotating shaft. One end of the stroke compensation transmission member and the transmission member 61 are fixedly connected to the handle mechanism 7, and the other end of the stroke compensation transmission member is slidingly connected to the first connecting end of the flexible shaft 5. The other end of the transmission member 61 is rotationally connected to the second connecting end of the flexible shaft 5. The operating handle mechanism 7 causes the stroke compensation transmission member and the transmission member 61 to rotate around the rotating shaft under the drive of the handle mechanism 7. The flexible shaft 5 respectively connected to the stroke compensation transmission member and the transmission member 61 moves in the cabinet 1 and drives the conversion mechanism to close or disconnect the circuit breaker handle.

[0095] The structure of the first conversion mechanism 3 is similar to that of the second embodiment, but no stroke compensation groove is provided on the first slider 32. The second conversion mechanism 4, the flexible shaft 5 and the handle mechanism 7 are the same as those of the first embodiment.

[0096] When the operating handle mechanism 7 causes the transmission mechanism to move the flexible shaft 5, the stroke compensation transmission member and the transmission member 61 rotate simultaneously. However, because the first connecting end and the stroke compensation groove are in a sliding fit, when the transmission member 61, via the second connecting end, causes the second driving end 52 to drive the second slider 42 to operate the second circuit breaker 22 handle, the first connecting end slides within the stroke compensation groove to compensate for the travel difference between the first and second circuit breaker handles. This compensation process involves the first connecting end moving from one side of the stroke compensation groove to the other, and then, after being limited by the contact between the edge of the stroke compensation groove and the first connecting end, it begins to drive the first driving end 51. As a result, the first driving end 51 begins to operate the first circuit breaker handle later than the second circuit breaker 22 handle. Preferably, the stroke compensation groove is arc-shaped.

[0097] Of course, the stroke compensation transmission member and the transmission member 61 can be combined into an integrated transmission member, on which a stroke compensation groove for slidingly engaging with the first connecting end and a connecting hole for rotatingly engaging with the second connecting end are provided. The connecting hole and the stroke compensation groove are located at different positions of the integrated transmission member. Preferably, the stroke compensation groove in this embodiment is a stroke compensation groove with an arc.

[0098] The circuit breaker in the present invention is a low-voltage molded case circuit breaker.

[0099] The above is a further detailed description of the present invention in conjunction with specific preferred embodiments, and the specific implementation of the present invention should not be considered to be limited to these descriptions. For those skilled in the art of the present invention, without departing from the concept of the present invention, several simple deductions or substitutions can be made, which should be considered to fall within the scope of protection of the present invention.

Claims

1. A mechanism for remotely operating a circuit breaker, comprising a cabinet (1), wherein at least two circuit breakers are installed in the cabinet (1), wherein the swing of the handles of the circuit breakers can be controlled by a remote operating mechanism to close or open the circuit breakers; the remote operating mechanism comprises a handle mechanism (7), a transmission mechanism, a flexible shaft (5), and a conversion mechanism connected in sequence, and is characterized in that: The circuit breaker in the cabinet (1) comprises at least a first circuit breaker (21) and a second circuit breaker (22), the stroke length of the first circuit breaker handle being shorter than the stroke length of the second circuit breaker handle, and a stroke compensation structure for compensating for the difference between the stroke lengths of the first circuit breaker handle and the second circuit breaker handle being provided on the remote operating mechanism; The transmission mechanism comprises a transmission member (61), one end of the transmission member (61) is fixedly connected to the handle mechanism (7), and the other end of the transmission member (61) is rotatably connected to the connection end (53) of the flexible shaft (5). The handle mechanism (7) is operated to rotate the transmission member (61) under the drive of the handle mechanism (7). The flexible shaft (5) connected to the transmission member (61) moves in the cabinet (1) under the rotation of the transmission member (61) and drives the conversion mechanism to close or open the circuit breaker handle. The conversion mechanism comprises a first conversion mechanism (3) and a second conversion mechanism (4) respectively coupled to the first circuit breaker handle and the second circuit breaker handle; the flexible shaft (5) comprises a first drive end (51) and a second drive end (52) respectively connected to the first conversion mechanism (3) and the second conversion mechanism (4); the operating handle mechanism (7) drives the first drive end (51) and the second drive end (52) of the flexible shaft (5) to move to the same stroke; and a stroke compensation structure for compensating for a difference between the stroke length of the first circuit breaker handle and the stroke length of the second circuit breaker handle is provided on the first conversion mechanism (3); The first conversion mechanism (3) includes a first sliding mechanism and a stroke compensation structure coordinated with the first sliding mechanism, the stroke compensation structure includes a third sliding mechanism, the first sliding mechanism of the first conversion mechanism (3) includes a first support panel (31) and a first slider (32) that can slide on the first support panel (31), and the third sliding mechanism includes a push plate (33) that can slide relative to the first slider (32); the first slider (32) can slide on the first support panel (31) to operate the first circuit breaker handle, the push plate (33) is provided with a first connecting portion (331) fixedly connected to the first driving end (51), after the first slider (32) stops sliding relative to the first support panel (31) or before the first slider (32) slides relative to the first support panel (31), the push plate (33) can move relative to the first slider (32) under the action of the first driving end (51) to compensate for the difference in stroke length between the first circuit breaker handle and the second circuit breaker handle. or, The first conversion mechanism (3) comprises a first sliding mechanism provided with a stroke compensation structure, the first sliding mechanism comprises a first slider (32) provided with a first operating portion (321), and a stroke compensation groove is provided on the first operating portion (321); the first conversion mechanism (3) comprises a first support panel (31) and a first slider (32), the first support panel (31) is arranged on the front of the first circuit breaker (21), a first sliding structure is provided between the first support panel (31) and the first slider (32), a first opening (311) parallel to the first sliding structure is provided on the first support panel (31), and the first opening (311) is provided. 11) for a first circuit breaker handle to pass through and to swing within the first opening (311); a first connecting portion (331) is provided on the first slider (32), and the first connecting portion (331) is fixedly connected to the first driving end (51); a first operating portion (321) is provided on the first slider (32), and the first operating portion (321) reserves a swinging space as a stroke compensation groove in the swinging direction of the first circuit breaker handle, and the first operating portion (321) is a groove structure, and the stroke compensation grooves are symmetrically located on both sides of the first operating portion (321), and the groove structure of the first operating portion (321) is connected to the stroke compensation groove to form an integrated first groove.

2. A mechanism for remotely operating a circuit breaker according to claim 1, characterized in that: The second sliding mechanism of the second conversion mechanism (4) comprises a second supporting panel (41) and a second sliding block (42) that can slide on the second supporting panel (41), and the second driving end (52) of the flexible shaft (5) is fixedly connected to the second sliding block (42).

3. The mechanism for remotely operating a circuit breaker according to claim 1, characterized in that: The first support panel (31) is arranged on the front of the first circuit breaker (21); a first sliding structure is provided between the first support panel (31) and the first slider (32); a first opening (311) parallel to the first sliding structure is provided on the first support panel (31); the first opening (311) allows the first circuit breaker handle to pass through and can swing within the first opening (311); the first slider (32) is provided with a first operating portion (321); when the first slider (32) and the first support panel (31) slide relative to each other, the first operating portion (321) is used to drive the first circuit breaker handle to realize the opening or closing of the circuit breaker.

4. A mechanism for remotely operating a circuit breaker according to claim 3, characterized in that: The first sliding structure comprises a first sliding groove (312) arranged on the first supporting panel (31) and a fixed shaft arranged on the first slider (32) as a first sliding part (322), the fixed shaft extending into the first sliding groove (312) for sliding engagement; the push plate (33) is provided with a strip guide groove (332), the first slider (32) is provided with a guide part (323), the guide part (323) extending into the strip guide groove (332) for sliding engagement.

5. The mechanism for remotely operating a circuit breaker according to claim 4, characterized in that: The length of the strip guide groove (332) is the difference between the movement stroke lengths of the first circuit breaker handle and the second circuit breaker handle.

6. The mechanism for remotely operating a circuit breaker according to claim 3, characterized in that: The first support panel (31) is rectangular in shape as a whole, and the edge of the first support panel (31) is bent toward the first circuit breaker (21) to form a first mounting portion (313), and the first mounting portion (313) is used to mount the first support panel (31) on the first circuit breaker (21); a first opening (311) for the first circuit breaker handle to pass through is provided in the middle of the first support panel (31), and a first sliding groove (312) is provided in parallel on one side of the first opening (311), and the first sliding groove (312) is used to slide with the first slider (32); a portion for assisting in fixing the flexible shaft (5 ), the first bracket (34) is vertically fixed to one side of the first supporting panel (31) and opposite to the push plate (33), and the first bracket (34) is provided with an avoidance hole (342) for the push plate (33) to pass through and a first assembly groove (341) for the first driving end (51) of the flexible shaft (5) to pass through. The first assembly groove (341) is an arc groove arranged on the edge of the first bracket (34), and the first assembly groove (341) and the first connecting portion (331) keep their central axes coincident, so that the first driving end (51) of the flexible shaft (5) can perform linear motion after passing through the first assembly groove (341).

7. The mechanism for remotely operating a circuit breaker according to claim 6, characterized in that: The first slider (32) has two sides of different widths. The edge of the wider side of the first slider (32) can abut against the first bracket (34) on the first support panel (31). A groove is provided in the middle of the first slider (32) as a first operating part (321). The edges of the upper and lower sides of the groove are bent toward the first support panel (31). A fixed shaft serving as the first sliding part (322) is provided on the narrower side of the first slider (32), and a fixed shaft serving as the guide part (323) is provided on the wider side of the first slider (32).

8. The mechanism for remotely operating a circuit breaker according to claim 3, characterized in that: The push plate (33) is strip-shaped as a whole, and one end of the push plate (33) is bent to form a first connecting portion (331). The first connecting portion (331) is used for fixed connection with the first driving end (51). A strip-shaped guide groove (332) is provided in the middle of the push plate (33) for sliding cooperation with the first slider (32).

9. The mechanism for remotely operating a circuit breaker according to claim 2, characterized in that: The second support panel (41) is arranged on the front of the second circuit breaker (22); a second sliding structure is provided between the second support panel (41) and the second slider (42) so that the second slider (42) can slide on the second support panel (41); a second opening parallel to the second sliding structure is provided on the second support panel (41); the second opening is for the second circuit breaker handle to pass through and can swing within the second opening; the second slider (42) is provided with a second connecting portion (423) and a second operating portion (421); when the second slider (42) and the second support panel (41) slide relative to each other, the second operating portion (421) is used to operate the second circuit breaker handle to open or close.

10. The mechanism for remotely operating a circuit breaker according to claim 1, characterized in that: The transmission mechanism comprises a third bracket (62) and a transmission member (61) rotatably supported on the third bracket (62); the third bracket (62) is supported and fixed in the cabinet (1); and the transmission member (61) is rotatably mounted on the third bracket (62) via a rotating shaft.

11. The mechanism for remotely operating a circuit breaker according to claim 10, characterized in that: The transmission member (61) is triangular in shape as a whole, wherein a first corner of the transmission member (61) is fixedly connected to the handle mechanism (7), a second corner of the transmission member (61) is rotationally connected to the third bracket (62) via a rotating shaft, and a third corner of the transmission member (61) is rotationally connected to the connecting end (53) of the flexible shaft (5).

12. The mechanism for remotely operating a circuit breaker according to claim 1, characterized in that: The handle mechanism (7) comprises a flange (71) and a handle (72) rotatably connected to the flange (71); the flange (71) is arranged on the outer wall of the cabinet (1); a connecting rod (73) is arranged inside the flange (71); the connecting rod (73) passes through the side wall of the cabinet (1) and extends into the interior of the cabinet (1); one end of the connecting rod (73) serves as an outer connecting end (731) and is rotatably connected to the handle (72) outside the cabinet (1); the other end of the connecting rod (73) serves as an inner connecting end (732) and is fixedly connected to a transmission mechanism inside the cabinet (1); when the operating handle (72) moves in a positive direction, the inner connecting end (732) moves in a direction away from the flange (71); when the operating handle (72) rotates in a negative direction, the outer connecting end (731) moves in a direction close to the flange (71).

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