Knob-type circuit breaker with electric operating device

Abstract

A knob type circuit breaker with an electric operating device comprises at least one phase pole unit arranged side by side in the width direction, the at least one phase pole unit is provided with an operating knob in the height direction and used for driving the knob type circuit breaker to be switched on and switched off, and the knob type circuit breaker further comprises the electric operating device. The electric operation device and the at least one phase pole unit are arranged side by side in the width direction, the electric operation device is provided with a supporting structure, the supporting structure is located on one side of the operation knob in the width direction, and a transmission mechanism controlled by a motor is arranged in the supporting structure. The transmission mechanism is used for driving the operation piece to rotate around the rotation center of the operation knob, so that the operation piece drives the operation knob to rotate, and then switching-on and switching-off are achieved.

Description

Technical Field

[0001] The utility model relates to the field of low-voltage electrical appliances, in particular to a knob-type circuit breaker with an electric operating device. Background Art

[0002] When the knob-type circuit breaker is located far away from the staff, if the system detects that the circuit breaker is tripped due to a controllable fault, if the knob-type circuit breaker needs to be remotely closed after the fault is eliminated, an electric operating device needs to be installed on the circuit breaker. However, the existing electric operating device is not only complex in structure, but also needs to be installed above the operating knob, resulting in an increase in the size of the circuit breaker in the direction where the operating knob is installed. If the space in the installation environment is limited, the circuit breaker may not be installed. Summary of the invention

[0003] The utility model aims to overcome at least one defect of the prior art and provide a knob-type circuit breaker with an electric operating device.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A knob-type circuit breaker with an electric operating device comprises at least one phase pole unit arranged side by side along the width direction, at least one phase pole unit is provided with an operating knob in the height direction for driving the knob-type circuit breaker to open and close, and also comprises an electric operating device, the electric operating device and the at least one phase pole unit are arranged side by side along the width direction, the electric operating device is provided with a supporting structure, the supporting structure is located on one side of the operating knob in the width direction, a transmission mechanism controlled by a motor is provided in the supporting structure, and an operating member extending outside the supporting structure and connected to the moving operating knob is provided, the transmission mechanism is used to drive the operating member to rotate around the rotation center of the operating knob, so that the operating member drives the operating knob to rotate.

[0006] Preferably, the motor is provided with a worm, and the worm is used to drive the transmission mechanism to rotate, and the axial direction of the worm is arranged parallel to the axial direction of the operating knob.

[0007] Preferably, the operating member is a push plate arranged on the radial side of the operating knob, the transmission mechanism is provided with a rack as a transmission member, the rack is arranged to move linearly, a push rod is provided on the rack, and the push plate is provided with a slide groove which is sleeved on the push rod, when the rack moves linearly, it drives the push rod to slide in the slide groove and pushes the push plate to rotate and move.

[0008] Preferably, the operating member is an operating gear coaxially arranged with the operating knob, the transmission mechanism is provided with a transmission gear as a transmission member, the transmission gear is used to drive the operating gear to rotate, the plane where the operating gear is located is arranged perpendicular to the plane where the transmission gear is located, and the operating gear and the transmission gear are respectively bevel gears.

[0009] Preferably, the operating gear and the transmission gear are respectively provided with an operating meshing part and a transmission meshing part of a fan-shaped structure, and the arcs of the operating meshing part and the transmission meshing part are respectively provided with meshing teeth that mesh with the other, and the central angles of the operating meshing part and the transmission meshing part are respectively less than degrees.

[0010] Preferably, the slide groove comprises a first sliding portion and a second sliding portion which are connected to each other, and the length direction of the first sliding portion is arranged at an oblique angle to the length direction of the second sliding portion.

[0011] Preferably, the electric operating device comprises a pressure plate arranged opposite to the rack, and the push rod and the push plate are located between the pressure plate and the rack.

[0012] Preferably, the push plate is provided with a U-shaped fixing structure, which includes a first fixing plate and a second fixing plate respectively connected to the push plate, the first fixing plate and the second fixing plate are arranged at an interval, and a fixing groove is provided between the first fixing plate and the second fixing plate, and the fixing groove is used to fit the upper limit of the handle of the operating knob.

[0013] Preferably, a vertical third fixing plate is provided on the second fixing plate, and a fixing screw for limiting the handle is provided on the third fixing plate.

[0014] Preferably, the electric operating device includes a cover shell, which includes a mounting structure and a supporting structure. The mounting structure is arranged side by side with the phase pole unit along the width direction, and the supporting structure is arranged on the mounting structure and protrudes toward a side where an operating knob is provided. A first cavity for accommodating a circuit board and a motor is provided in the mounting structure, and a second cavity for accommodating a transmission mechanism is provided in the supporting structure.

[0015] Preferably, the transmission mechanism includes a gear set and a transmission member, and the motor drives the transmission member through the gear set, and drives the operating member through the transmission member to rotate the operating knob.

[0016] Preferably, the gear set includes a first gear and a second gear arranged coaxially, a third gear and a fourth gear arranged coaxially, and a fifth gear. The motor is used to drive the first gear to rotate, so that the first gear drives the second gear to rotate. The second gear is arranged on the back of the first gear. The second gear is meshed with the third gear. The second gear is used to drive the third gear to rotate, so that the third gear drives the fourth gear to rotate. The fourth gear is meshed with the fifth gear. The fourth gear is used to drive the fifth gear to rotate. The fifth gear is used to drive the transmission member.

[0017] Preferably, the motor is provided with a worm gear meshing with the first gear, the worm gear, the first gear and the fourth gear are arranged on the same plane, and the worm gear and the fourth gear are relatively arranged on both sides of the first gear, the fifth gear, the first gear and the fourth gear are located in the first plane, the second gear and the third gear are located in the second plane on the back side, the fifth gear and the circuit board are relatively arranged on both sides of the fourth gear, and the circuit board is located on the side of the motor.

[0018] Preferably, the electric operating device also includes two springs arranged relatively at both ends of the rack, the transmission mechanism is provided with a fifth gear for driving the rack to rotate, and the two springs are respectively used to push the rack to move toward the fifth gear, so that the rack and the fifth gear maintain contact in a non-meshed state.

[0019] Preferably, it also includes an operating mechanism, which includes a rocker arm, multiple connecting rods and a lock, the rocker arm is connected to the operating knob, and the multiple connecting rods are sequentially connected in transmission, the rocker arm is connected to the moving contact of the phase pole unit through the multiple connecting rods, and one of the connecting rods and the lock are snap-fitted with each other, the rotation axis of the rocker arm is perpendicular to the axis of the operating knob, and the operating knob can drive the moving contact of the phase pole unit to contact and separate with the static contact through the operating mechanism when one of the connecting rods and the lock is snap-fitted with each other.

[0020] Preferably, it also includes a bimetallic strip and a differential mechanism, wherein the differential mechanism includes two differential members relatively arranged on both sides of the bimetallic strip, and the bimetallic strip can bend in two opposite directions and push the differential members on both sides respectively, so that the differential members drive the lock of the operating mechanism to contact and engage with the corresponding connecting rod to trip the motor starter.

[0021] The knob-type circuit breaker of the present invention includes an electric operating device, which is arranged side by side with at least one phase pole unit in the width direction. The electric operating device is provided with a support structure protruding toward the side where the operating knob is provided, and the support structure is located on the side of the operating knob in the width direction. The support structure is provided with a transmission mechanism controlled by a motor, and an operating member extending outside the support structure and connected to the operating knob. The transmission mechanism is used to drive the operating member to rotate around the rotation center of the operating knob, so that the operating member drives the operating knob to rotate, thereby realizing opening and closing of the circuit breaker.

[0022] In addition, the axial direction of the worm is arranged parallel to the protruding direction of the supporting structure. The worm is inserted into the mounting structure and connected to the motor. The use of the worm can utilize the longitudinal space of the electric operating device and avoid increasing the lateral width of the electric operating device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the circuit breaker;

[0024] Figure 2It is the right side view of the circuit breaker;

[0025] Figure 3 is a schematic diagram of the structure of the first gear and the second gear;

[0026] Figure 4 is a schematic diagram of the structure of the third gear and the fourth gear;

[0027] Figure 5 The electric operation module in the first embodiment is in the open state;

[0028] Figure 6 The circuit breaker in the first embodiment is in the open state;

[0029] Figure 7 The electric operation module in the first embodiment is in the closed state;

[0030] Figure 8 The circuit breaker in the first embodiment is in a closed state;

[0031] Fig. 9 is a schematic diagram of the structure of the push plate and the rack in the first embodiment;

[0032] Fig.10 is another structural schematic diagram of the push plate and the rack in the first embodiment;

[0033] Fig.11 The circuit breaker in the second embodiment is in the open state;

[0034] Fig.12 It is the electric operation module in the open state in the second embodiment;

[0035] In the figure, 1, phase pole unit; 2, operating knob; 3, electric operating device; 31, supporting structure; 5, motor; 4, operating member; 32, mounting structure; 33, circuit board; 34, terminal; 71, first gear; 72, second gear; 73, third gear; 74, fourth gear; 75, fifth gear; 51, worm; 41, push plate; 76, rack; 77, push rod; 42, slide groove; 43, pressure plate; 421, first sliding part; 422, second sliding part; 44, first fixed plate; 45, second fixed plate; 46, fixed groove; 21, handle; 47, third fixed plate; 48, fixing screw; 61, operating gear; 78, transmission gear; 610, operating meshing part; 780, transmission meshing part. DETAILED DESCRIPTION

[0036] The following embodiments are combined with the accompanying drawings to further illustrate the specific implementation of the knob-type circuit breaker with an electric operating device of the present utility model. The knob-type circuit breaker with an electric operating device of the present utility model is not limited to the description of the following embodiments.

[0037] like Figure 1-2 As shown, the knob-type circuit breaker with an electric operating device in this embodiment includes three phase pole units 1 arranged side by side along the width direction of the circuit breaker. The three phase pole units 1 are provided with operating knobs 2 along the height direction of the circuit breaker for driving the knob-type circuit breaker to open and close. The number of the phase pole unit 1 is at least one, and it can also be two or more. The three phase pole units 1 are respectively provided with moving contacts and stationary contacts, which are not shown in the figure. The moving contacts of the phase pole units 1 are respectively connected to the operating mechanism through the main shaft. The operating knob 2 is used to drive the rocker arm of the operating mechanism to swing, so that the operating mechanism drives the moving contacts of the phase pole units 1 to contact and separate with their respective stationary contacts to achieve opening and closing. Figure 1 As shown in the figure, the left-right direction is the width direction of the circuit breaker, the up-down direction is the length direction of the circuit breaker, and the direction perpendicular to the paper surface is the height direction of the circuit breaker.

[0038] The knob-type circuit breaker of this embodiment is a motor starter, which includes a bimetallic strip, an operating mechanism and a differential mechanism. The operating mechanism is a flat structure (not shown in the figure), preferably arranged between two flat brackets, and the operating mechanism includes a rocker arm, a plurality of connecting rods and a lock. The rocker arm is connected to the operating knob 2, and the plurality of connecting rods are sequentially connected in transmission. The plurality of connecting rods are connected between the rocker arm and the moving contact of the phase pole unit 1. The rocker arm is connected to the moving contact of the phase pole unit 1 through the plurality of connecting rods, and one of the connecting rods and the lock are snap-fitted with each other, and the rotation axis of the rocker arm is Perpendicular to the axial direction of the operating knob 2, the two can be driven by a gear structure or a cam structure. When one of the connecting rods and the lock buckle of the operating knob 2 is locked with each other, the operating mechanism can drive the moving contact and the static contact to contact and separate, thereby realizing the opening and closing of the motor starter. The differential mechanism includes two differential parts relatively arranged on both sides of the bimetallic strip. The bimetallic strip bends in two opposite directions when overloaded and under-phased, and pushes the differential parts on both sides respectively, so that the differential parts drive the lock buckle of the operating mechanism to cooperate with the corresponding connecting rod contact buckle, thereby tripping the motor starter. Of course, the knob-type circuit breaker can also be a molded case circuit breaker, both of which belong to the protection scope of the utility model.

[0039] The knob-type circuit breaker of this embodiment also includes an electric operating device 3, which is arranged side by side with at least one phase pole unit 1 in the width direction. The electric operating device 3 is provided with a support structure 31 protruding toward the side where the operating knob 2 is provided, and the support structure 31 is located on the side of the operating knob 2 in the width direction. The support structure 31 is provided with a transmission mechanism controlled by a motor 5, and an operating member 4 extending outside the support structure 31 and connected to the operating knob 2. The transmission mechanism is used to drive the operating member 4 to rotate around the rotation center of the operating knob 2, so that the operating member 4 drives the operating knob 2 to rotate, thereby realizing opening and closing of the circuit breaker.

[0040] The knob-type circuit breaker with an electric operating device in this embodiment, by arranging the electric operating device 3 and the phase pole unit 1 side by side in the width direction, can not only realize remote control of circuit breaker closing through the electric operating device 3, effectively saving manpower, but also does not need to arrange the electric operating device 3 above the operating knob 2, and will not increase the size in the height direction of the circuit breaker. Even in a distribution cabinet or other occasions with limited space, it can be normally installed and used.

[0041] like Figure 2-5 As shown, the electric operating device 3 of this embodiment includes a housing, the housing includes a support structure 31 and a mounting structure 32, the support structure 31 and the mounting structure 32 are arranged along the height direction of the circuit breaker, the mounting structure 32 and the two phase pole units 1 are arranged side by side along the width direction, the support structure 31 is arranged on the mounting structure 32 and protrudes toward the side where the operating knob 2 is arranged, the support structure 31 is located on one side of the operating knob 2 in the width direction, the mounting structure 32 is provided with a first cavity for accommodating a circuit board 33 and a motor 5, the circuit board 33 is connected to the remote control device through a terminal 34, the support structure 31 is provided with a second cavity for accommodating a transmission mechanism, and the motor 5 drives the operating member 4 to rotate around the rotation center of the operating knob 2 through the transmission mechanism. In this embodiment, the support structure 31 and the mounting structure 32 are used to illustrate the layout of the housing, and the actual support structure 31 and the mounting structure 32 are basically an integrated structure; in addition, in this embodiment, in the length direction of the circuit breaker, the length of the support structure 31 is less than the length of the mounting structure 32, and as other embodiments, the length of the support structure 31 can also be equal to or greater than the mounting structure 32.

[0042] Further, the transmission mechanism includes a gear set and a transmission member, and the motor 5 drives the transmission member through the gear set, and drives the operating member 4 through the transmission member to rotate the operating knob 2. In this embodiment, the gear set includes a first gear 71 and a second gear 72 coaxially arranged, a third gear 73 and a fourth gear 74 coaxially arranged, and a fifth gear 75. The motor 5 is used to drive the first gear 71 to rotate, so that the first gear 71 drives the second gear 72 to rotate, the second gear 72 is arranged on the back of the first gear 71, the second gear 72 is meshed with the third gear 73, the second gear 72 is used to drive the third gear 73 to rotate, so that the third gear 73 drives the fourth gear 74 to rotate, the fourth gear 74 is meshed with the fifth gear 75, the fourth gear 74 is used to drive the fifth gear 75 to rotate, the fifth gear 75 is used to drive the transmission member to rotate or move, and drives the operating member 4 through the transmission member to rotate the operating knob 2. The first gear 71 and the second gear 72 can be integrally formed, or they can be separately processed and assembled into one. Similarly, the third gear 73 and the fourth gear 74 can also be integrally formed or separately processed. As other embodiments, the gear set may also include more or fewer gears.

[0043] Further, the motor 5 is provided with a worm 51 meshing with the gear set, and the motor 5 drives the gear set to rotate through the worm 51. In this embodiment, the worm 51 is used to drive the first gear 71 to rotate. The worm 51, the first gear 71 and the fourth gear 74 are arranged in the same plane, and the worm 51 and the fourth gear 74 are arranged on both sides of the first gear 71. The motor 5 is arranged in the mounting structure 32. The axial direction of the worm 51 is arranged parallel to the protruding direction of the support structure 31, that is, parallel to the axial direction of the operating knob 2 and the height direction of the circuit breaker. The worm 51 is inserted into the mounting structure 32 and connected to the motor 5. The use of the worm 51 can utilize the longitudinal space of the electric operating device 3 to avoid increasing the lateral width of the electric operating device 3. Of course, the worm 51 can also adopt a common gear structure, which belongs to the protection scope of the utility model.

[0044] Furthermore, the fifth gear 75, the first gear 71 and the fourth gear 74 are located on the first plane, the second gear 72 and the third gear 73 are located on the second plane on the back side, the fifth gear 75 and the circuit board 33 are relatively arranged on both sides of the fourth gear 74, and the circuit board 33 is located on the side of the motor 5. The utilization rate of the longitudinal space can be further improved, thereby reducing the width of the electric operating device 3. Even if the electric operating device 3 is arranged side by side on the circuit breaker in the width direction, the width of the combined circuit breaker can be minimized, thereby avoiding the inconvenience caused by the increase in width.

[0045] Embodiment 1

[0046] like Figure 5-10 As shown, the operating member 4 of this embodiment is a push plate 41 connected to the operating knob 2, and the push plate 41 is arranged on one side of the radial direction of the operating knob 2. The transmission member of the transmission mechanism is a rack 76, and the rack 76 is arranged to move linearly. The gear set of the transmission mechanism is used to drive the rack 76 to move linearly. The fifth gear 75 in this embodiment is meshed with the rack 76, and the rack 76 is provided with a push rod 77 for pushing the push plate 41 to rotate. The push plate 41 is provided with a slide groove 42 sleeved on the push rod 77. When the rack 76 moves linearly, it drives the push rod 77 to slide in the slide groove 42 and pushes the push plate 41 to rotate and move. The push plate 41 screws the operating knob 2 like a wrench, and the push rod 77 slides along the slide groove 42 when the push plate 41 rotates. The push rod 77 in this embodiment is an iron rod, the rack 76 is a plastic part, the push rod 77 is installed on the rack 76, the push rod 77 is connected to the push rod 41 through the slide groove 42, and the push rod 77 pushes the push plate 41 to make the rotation center of the operating knob 2 perform a circular motion within a certain range.

[0047] Furthermore, the electric operating device 3 also includes two springs 760 arranged at both ends of the rack 76, and the two springs 760 are respectively used to push the rack 76 to move toward the fifth gear 75, so that the rack 76 and the fifth gear 75 remain in contact in a non-engaged state. After the fifth gear 75 pushes the rack 76 to one side, it is no longer in an engaged state. The purpose of this is to avoid mechanical jamming caused by excessive rotation of the fifth gear 75. The function of the two springs 760 is that after the fifth gear 75 pushes the rack 76 to one side, when it is necessary to control the fifth gear 75 to rotate in the opposite direction, such as when it is necessary to drive the circuit breaker from a closed state to an open state or from an open state to a closed state, the springs 760 will keep the rack 76 and the fifth gear 75 in a contact state, and once the rotation direction of the fifth gear 75 changes, it can normally mesh with the gear 76.

[0048] Figure 5-6 The circuit breaker is in the open state. At this time, the motor 2 is in operation, and the rack 76 moves to the left under the drive of the fifth gear 75 (see Figure 5 ), the push rod 77 slides in the slide slot 42 and pushes the push plate 41 to move and rotate. During this process, the push plate 41 drives the operating knob 2 to rotate, so that the operating knob 2 drives the circuit breaker to close until Figure 7-8 The circuit breaker is shown in the closed position, with the rack 76 in contact with the left end spring 760. Figure 6 , 8 It can be seen that the push plate 41 is Figure 6 Move to Figure 8 In the state, the push plate 41 as a whole moves straightly from the upper part of the figure to the lower part, and the fixed groove 46 part connecting the push plate 41 and the operating knob 2 rotates 90 degrees. Figure 7-8Starting from the position shown, the rack 76 moves to the right under the drive of the fifth gear 75 (see Figure 7 ).

[0049] Further, the housing of the electric operating device 3 includes a pressing plate 43 arranged opposite to the rack 76, the push rod 77 and the push plate 41 are located between the pressing plate 43 and the rack 76, the slide groove 42 includes a first sliding portion 421 and a second sliding portion 422 which are connected, and the length direction of the first sliding portion 421 is arranged at an oblique angle to the length direction of the second sliding portion 422, and the second sliding portion 422 is substantially parallel to the moving direction of the rack 76, when the push plate 41 rotates a certain angle with the operating knob 2, the first sliding portion 421 and the second sliding portion 422 arranged at an oblique angle can adjust the angle of cooperation with the push rod 77, so that the push rod 77 can push the push plate 41 to rotate. Of course, the slide groove 42 can also be an arc-shaped structure, which belongs to the protection scope of the utility model. In addition, the pressing plate 43 can be set on the housing without being arranged, and the pressing plate 43 can be set separately, which belongs to the protection scope of the utility model.

[0050] Furthermore, the push plate 41 is provided with a U-shaped fixing structure, which includes a first fixing plate 44 and a second fixing plate 45 respectively connected to the push plate 41, the first fixing plate 44 and the second fixing plate 45 are arranged at an interval, and a fixing groove 46 is provided between the first fixing plate 44 and the second fixing plate 45, the fixing groove 46 is used to be sleeved on the handle 21 of the operating knob 2 for upper limit cooperation, the second fixing plate 45 is provided with a vertical third fixing plate 47, and the third fixing plate 47 is provided with a fixing screw 48 for limiting the handle 21, the fixing screw 48 can pass through the third fixing plate 47 and then be threadedly connected to the handle 21, the fixing screw 48 can also be only used to push the handle 21 so that the handle 21 is pressed against the first fixing plate 44, the fixing structure is sleeved on the handle 21 through the fixing groove 46, and then connected to the handle 21 or the handle 21 is pressed through the fixing screw 48, so that the push plate 41 can be reliably connected to the operating knob 2, and loosening or falling off between the two can be avoided, and it also has the characteristics of simple structure and low cost. Of course, the push plate 41 may also be connected to the knob in other ways, such as not providing the fixing screw 48, or the first fixing plate 44 and the second fixing plate 45 are directly connected to the operating knob 2 via the fixing screw 48, which all fall within the protection scope of the present utility model.

[0051] Embodiment 2

[0052] like Figure 11-12As shown, the operating member 4 of this embodiment is an operating gear 61 coaxially arranged with the operating knob 2, and the transmission member is a transmission gear 78 used to drive the operating gear 61 to rotate. The motor 5 drives the transmission gear 78 to rotate through the gear set, and drives the operating gear 61 through the transmission gear 78 to rotate the operating knob 2. The transmission gear 78 is coaxially arranged with the fifth gear 75, and the fifth gear 75 is used to drive the transmission gear 78 to rotate. It can be understood that the operating gear 61 and the operating knob 2 can be processed separately and then assembled into one, or the operating gear 61 and the operating knob 2 can be processed and formed as one. Similarly, the transmission gear 78 and the fifth gear 75 can also be formed as one piece or processed separately and then assembled, both of which belong to the protection scope of the present utility model.

[0053] Furthermore, the plane where the operating gear 61 is located is perpendicular to the plane where the transmission gear 78 is located, and the operating gear 61 and the transmission gear 78 are respectively bevel gears. Of course, the operating gear 61 and the transmission gear 78 may not be bevel gears, and the operating gear 61 and the transmission gear 78 may be ordinary gears, or the transmission member may use a worm 51 structure instead of the transmission gear 78, which may require partial changes to the transmission mechanism, and all of these belong to the protection scope of the present utility model.

[0054] Further, the operating gear 61 and the transmission gear 78 are both incomplete gear structures, and the operating gear 61 and the transmission gear 78 are respectively provided with an operating meshing portion 610 and a transmission meshing portion 780 of a fan-shaped structure, and the arcs of the operating meshing portion 610 and the transmission meshing portion 780 are respectively provided with meshing teeth that mesh with the other, and the central angles of the operating meshing portion 610 and the transmission meshing portion 780 are respectively less than 90 degrees. Of course, the central angles of the operating meshing portion 610 and the transmission meshing portion 780 can also be adjusted, for example, greater than or equal to 90 degrees, but less than 360 degrees. The use of an incomplete gear structure can reduce the volume, thereby reducing the volume of the electric operating device 3. In addition, at least one of the operating gear 61 and the transmission gear 78 can be an incomplete gear, and the other can be a complete gear, both of which belong to the protection scope of the utility model.

[0055] It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate directions or positional relationships based on directions or positional relationships shown in the drawings, or directions or positional relationships that are usually placed when in use, and are only for the convenience of description, rather than indicating that the device or element referred to must have a specific direction, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish descriptions, and cannot be understood as indicating relative importance.

[0056] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A knob-type circuit breaker with an electric operating device, comprising at least one phase pole unit (1) arranged side by side in a width direction, at least one phase pole unit (1) being provided with an operating knob (2) in a height direction for driving the knob-type circuit breaker to open and close, characterized in that: The invention also comprises an electric operating device (3), wherein the electric operating device (3) and the at least one phase pole unit (1) are arranged side by side in the width direction, and the electric operating device (3) is provided with a support structure (31), and the support structure (31) is located on one side of the operating knob (2) in the width direction. The support structure (31) is provided with a transmission mechanism controlled by a motor (5), and an operating member (4) extending outside the support structure (31) and connected to the operating knob (2), and the transmission mechanism is used to drive the operating member (4) to rotate around the rotation center of the operating knob (2), so that the operating member (4) drives the operating knob (2) to rotate.

2. The knob-type circuit breaker with an electric operating device according to claim 1, characterized in that: The motor (5) is provided with a worm (51), and the worm (51) is used to drive the transmission mechanism to rotate. The axial direction of the worm (51) is arranged parallel to the axial direction of the operating knob (2).

3. The knob-type circuit breaker with an electric operating device according to claim 1, characterized in that: The operating member (4) is a push plate (41) arranged on a radial side of the operating knob (2); the transmission mechanism is provided with a rack (76) as a transmission member; the rack (76) is arranged to move linearly; a push rod (77) is provided on the rack (76); the push plate (41) is provided with a slide groove (42) sleeved on the push rod (77); when the rack (76) moves linearly, it drives the push rod (77) to slide in the slide groove (42) and pushes the push plate (41) to rotate and move.

4. The knob-type circuit breaker with an electric operating device according to claim 1, characterized in that: The operating member (4) is an operating gear (61) coaxially arranged with the operating knob (2); the transmission mechanism is provided with a transmission gear (78) as a transmission member; the transmission gear (78) is used to drive the operating gear (61) to rotate; the plane where the operating gear (61) is located is perpendicular to the plane where the transmission gear (78) is located; the operating gear (61) and the transmission gear (78) are respectively bevel gears.

5. The knob-type circuit breaker with an electric operating device according to claim 4, characterized in that: The operating gear (61) and the transmission gear (78) are respectively provided with an operating meshing portion (610) and a transmission meshing portion (780) of a fan-shaped structure, and meshing teeth meshing with the other are respectively provided on the arcs of the operating meshing portion (610) and the transmission meshing portion (780), and the central angles of the operating meshing portion (610) and the transmission meshing portion (780) are respectively less than 90 degrees.

6. The knob-type circuit breaker with an electric operating device according to claim 3, characterized in that: The slide groove (42) comprises a first sliding portion (421) and a second sliding portion (422) which are connected to each other, and the length direction of the first sliding portion (421) and the length direction of the second sliding portion (422) are arranged at an oblique angle.

7. The knob-type circuit breaker with an electric operating device according to claim 3, characterized in that: The electric operating device (3) comprises a pressure plate (43) arranged opposite to the rack (76), and the push rod (77) and the push plate (41) are located between the pressure plate (43) and the rack (76).

8. The knob-type circuit breaker with an electric operating device according to claim 3, characterized in that: The push plate (41) is provided with a U-shaped fixing structure, and the fixing structure comprises a first fixing plate (44) and a second fixing plate (45) respectively connected to the push plate (41), the first fixing plate (44) and the second fixing plate (45) are arranged at an interval, and a fixing groove (46) is provided between the first fixing plate (44) and the second fixing plate (45), and the fixing groove (46) is used to fit the upper limit position of the handle (21) of the operating knob (2).

9. The knob-type circuit breaker with an electric operating device according to claim 8, characterized in that: A vertical third fixing plate (47) is provided on the second fixing plate (45), and a fixing screw (48) for limiting the position of the handle (21) is provided on the third fixing plate (47).

10. The knob-type circuit breaker with an electric operating device according to claim 1, characterized in that: The electric operating device (3) comprises a housing, the housing comprising a mounting structure (32) and a supporting structure (31), the mounting structure (32) and the phase pole unit (1) being arranged side by side in a width direction, the supporting structure (31) being arranged on the mounting structure (32) and protruding toward a side where an operating knob (2) is arranged, the mounting structure (32) being provided with a first cavity for accommodating a circuit board (33) and a motor (5), and the supporting structure (31) being provided with a second cavity for accommodating a transmission mechanism.

11. The knob-type circuit breaker with an electric operating device according to claim 1, characterized in that: The transmission mechanism comprises a gear set and a transmission member, and the motor (5) drives the transmission member through the gear set, and drives the operating member (4) through the transmission member, so that the operating knob (2) rotates.

12. The knob-type circuit breaker with an electric operating device according to claim 11, characterized in that: The gear set comprises a first gear (71) and a second gear (72) which are coaxially arranged, a third gear (73) and a fourth gear (74) which are coaxially arranged, and a fifth gear (75); the motor (5) is used to drive the first gear (71) to rotate, so that the first gear (71) drives the second gear (72) to rotate; the second gear (72) is arranged on the back of the first gear (71); the second gear (72) is meshed with the third gear (73); the second gear (72) is used to drive the third gear (73) to rotate, so that the third gear (73) drives the fourth gear (74) to rotate; the fourth gear (74) is meshed with the fifth gear (75); the fourth gear (74) is used to drive the fifth gear (75) to rotate; and the fifth gear (75) is used to drive a transmission member.

13. The knob-type circuit breaker with an electric operating device according to claim 12, characterized in that: The motor (5) is provided with a worm (51) meshing with the first gear (71); the worm (51), the first gear (71) and the fourth gear (74) are arranged on the same plane, and the worm (51) and the fourth gear (74) are arranged on both sides of the first gear (71) in a relative manner; the fifth gear (75), the first gear (71) and the fourth gear (74) are located on the first plane; the second gear (72) and the third gear (73) are located on the second plane on the back side; the fifth gear (75) and the circuit board (33) are arranged on both sides of the fourth gear (74) in a relative manner, and the circuit board (33) is located on the side of the motor (5).

14. The knob-type circuit breaker with an electric operating device according to claim 3, characterized in that: The electric operating device (3) also includes two springs (760) arranged at two ends of the rack (76) in a relative manner. The transmission mechanism is provided with a fifth gear (75) for driving the rack (76) to rotate. The two springs (760) are respectively used to push the rack (76) to move toward the fifth gear (75), so that the rack (76) and the fifth gear (75) maintain contact in a non-engaged state.

15. The knob-type circuit breaker with an electric operating device according to claim 1, characterized in that: The invention also comprises an operating mechanism, wherein the operating mechanism comprises a rocker arm, a plurality of connecting rods and a lock, wherein the rocker arm is connected to the operating knob (2), the plurality of connecting rods are sequentially connected in transmission, the rocker arm is connected to the moving contact of the phase pole unit (1) via the plurality of connecting rods, and one of the connecting rods and the lock are mutually snap-fitted, the rotation axis of the rocker arm is perpendicular to the axis of the operating knob (2), and the operating knob (2) can drive the moving contact of the phase pole unit (1) to contact and separate with the static contact through the operating mechanism when one of the connecting rods and the lock is mutually snap-fitted.

16. The knob-type circuit breaker with an electric operating device according to claim 15, characterized in that: It also includes a bimetallic strip and a differential mechanism, wherein the differential mechanism includes two differential members relatively arranged on both sides of the bimetallic strip, and the bimetallic strip can bend in two opposite directions and push the differential members on both sides respectively, so that the differential members drive the lock of the operating mechanism to contact and engage with the corresponding connecting rod, thereby tripping the motor starter.

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