CN211125534U - Electric operation device of circuit breaker - Google Patents

Abstract

An electric operating device of a circuit breaker comprises a shell, wherein a transmission mechanism is arranged in the shell; a sliding rod is arranged in the shell, a switching-on driving piece and a switching-off driving piece controlled by a transmission mechanism are arranged on the sliding rod, and the switching-on driving piece and the switching-off driving piece are respectively provided with a linkage groove matched with the transmission shaft, so that a switching-on operating part and a switching-off operating part respectively operate the switching-on and switching-off of a handle of the circuit breaker; the switching-on operation portion and the switching-off operation portion are reserved with a space, a handle of the circuit breaker extends into the reserved space, the switching-on operation portion and the switching-off operation portion cannot contact with the handle of the circuit breaker when the switching-on and switching-off operation is not carried out, and the circuit breaker can be restored to an initial state after the handle of the switching-on driving piece or the switching-off driving piece drives the circuit breaker to act. The utility model discloses an electric operating means of circuit breaker, the handle separating brake or the combined floodgate back that combined floodgate driving piece and separating brake driving piece operated circuit breaker can resume initial condition, avoid producing the malfunction.

Description

Electric operation device of circuit breaker

Technical Field

The utility model relates to a circuit breaker technical field, concretely relates to electric operating means of circuit breaker.

Background

The miniature circuit breaker is widely applied to low-voltage distribution and control cabinets, because occasions needing automatic control and remote control functions are more and more, various electric operating devices appear in the market, parts for controlling opening and closing of the electric operating devices are often connected together, and when the electric operating devices drive the opening and closing parts, misoperation is often generated due to poor matching.

Disclosure of Invention

An object of the utility model is to overcome prior art's defect, provide an electric operating means of circuit breaker simple structure, reliability are high.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

An electric operating device of a circuit breaker comprises a shell, wherein a transmission mechanism is arranged in the shell; the circuit breaker comprises a shell, and is characterized in that a first sliding groove communicated with the interior of the shell is formed in one side wall of the shell as an operating surface, a sliding rod is installed in the shell, a driving piece controlled by a transmission mechanism is installed on the sliding rod, the transmission mechanism is provided with a transmission shaft, the driving piece comprises a closing driving piece and a separating driving piece, the closing driving piece and the separating driving piece are respectively provided with a closing operation part and a separating operation part, linkage grooves matched with the transmission shaft are respectively formed in the closing driving piece and the separating driving piece, the closing operation part and the separating operation part penetrate through the first sliding groove and extend out of the shell, and the transmission mechanism respectively drives the closing driving piece and the separating driving piece to move along the sliding rod through the matching of the transmission shaft and the linkage grooves, so that the closing operation part and the separating operation part respectively operate;

The space is reserved between the closing operation part and the opening operation part, a handle of the circuit breaker stretches into the reserved space, and in the initial state, namely when the opening and closing operation is not carried out, the closing operation part and the opening operation part can not contact the handle of the circuit breaker, and the initial state can be recovered after the handle of the circuit breaker is driven by the closing driving part or the opening driving part.

Further, the transmission mechanism comprises a motor and a gear set connected with the motor, the gear set comprises a closing output gear, an opening output gear and a control gear, the closing output gear is provided with a closing transmission shaft matched with the closing driving piece, and the opening output gear is provided with an opening transmission shaft matched with the opening driving piece; the control gear is provided with a raised trigger platform, a plurality of position identification switches are arranged on the circumference coaxial with the control gear at intervals and are matched with the trigger platform, and the position identification switches comprise initial position identification switches, closing position identification switches and opening position identification switches;

When the trigger platform triggers the initial position identification switch, the switching-on operation part returns to the initial position, and the motor stops rotating;

When the trigger platform triggers the initial position identification switch, the brake separating operation part returns to the initial position, and the motor stops rotating.

Further, a compression spring is arranged between the closing driving part and the opening driving part, and the compression spring is matched with the closing driving part and the opening driving part in an auxiliary mode to reset.

Further, the switching-on driving part comprises a first linkage part and a switching-on part, the first linkage part is installed on the sliding rod, the switching-on part is installed on the sliding rod and is linked with the first linkage part, the first linkage part is provided with a first linkage groove matched with the switching-on transmission shaft, and the switching-on part is provided with a switching-on operation part; and/or the brake-separating driving piece comprises a second linkage piece and a brake-separating piece, the second linkage piece is arranged on the sliding rod, the brake-separating piece is arranged on the sliding rod and is linked with the second linkage piece, the second linkage piece is provided with a second linkage groove (30c) matched with the brake-separating transmission shaft, and the brake-separating piece is provided with a brake-separating operation part.

Further, the first linkage groove and the second linkage groove both comprise an open end and a closed end; the closed end of the first linkage groove is matched with the closing transmission shaft to drive the first linkage part to move, and the open end of the first linkage groove is used for enabling the closing transmission shaft to rotate out after closing is finished so as to realize separation from the first linkage part; the closed end of the second linkage groove is matched with the opening transmission shaft to drive the second linkage member to move, and the open end of the second linkage member is used for enabling the opening transmission shaft to rotate out after opening is finished so as to realize separation from the second linkage member.

Furthermore, the open end of the first linkage groove is opposite to the open end of the second linkage groove in a staggered mode, the direction from the open end to the closed end of the first linkage groove is opposite to the direction from the open end to the closed end of the second linkage groove, and the closing output gear and the opening output gear are meshed with each other.

Further, the first linkage piece is formed by sequentially connecting a first linkage wall, a third linkage wall and a second linkage wall to form a U-shaped structure with an opening facing the first sliding groove; the first linkage groove is arranged on the third linkage wall, through holes for the sliding rods to pass through are formed in the opposite first linkage wall and the second linkage wall, the closing part is smaller than the first linkage part and is arranged in the first linkage part, the closing part is formed in a U-shaped structure by sequentially connecting a first side wall, a first connecting wall and a second side wall, the opposite first side wall and the opposite second side wall are provided with through holes for penetrating through the sliding rods, and an elastic buffer part is sleeved on the sliding rods between the second side wall and the first linkage part;

The second linkage part is formed by sequentially connecting a fourth linkage wall, a sixth linkage wall and a fifth linkage wall to form a U-shaped structure; it is relative be equipped with the through-hole that supplies the slide bar to pass on fourth linkage wall, the fifth linkage wall, the second linkage groove sets up in fourth linkage wall, the separating brake spare sets up in the second linkage, and the separating brake spare is connected the wall by third lateral wall, second and fourth lateral wall and is connected gradually and form the U-shaped structure, and is relative be equipped with the through-hole that supplies the slide bar to pass on third lateral wall, the fourth lateral wall, and the separating brake spare is located between fourth linkage wall and the fifth linkage wall, cup joints elastic bolster on the slide bar that is located between fourth lateral wall and the fourth linkage wall.

Further, first linkage groove is including the first straight section and the first circular arc section of intercommunication, first straight section perpendicular to slide bar, the blind end is located first straight section tip, opens the end and is located first circular arc section tip, and its uncovered setting is in the junction of second linkage wall and third linkage wall.

Further, the second linkage groove includes the second straight section and the second circular arc section that include the intercommunication in proper order, and the second straight section is on a parallel with the slide bar, and the second circular arc section is close semicircle circular-arcly, the blind end is located second circular arc section tip, and one side of second circular arc section is the circular arc lateral wall, and the opposite side is the sharp lateral wall, opens the end and is located second straight section tip, opens the uncovered setting in the junction of fourth linkage wall and sixth linkage wall of end.

Furthermore, a connecting groove for connecting the closing piece is arranged on the first linkage wall, and the first connecting wall penetrates through the connecting groove of the first linkage piece to enable the second side wall of the closing piece to be located inside the first linkage piece; a closing operation part is arranged on the first side wall, the closing operation part extends out of the first sliding groove and is formed by extending the middle edge of the first side wall to the direction of the first sliding groove, and the end part of the closing operation part is bent downwards; the third side wall is provided with a brake separating operation part which is integrally formed by the third side wall, the brake separating operation part is integrally in a U-shaped body with an upward opening, and the U-shaped body is provided with a long side wall used for being connected with the third side wall and a short side wall used for being contacted with a handle of the circuit breaker.

The utility model discloses an electric operating means of circuit breaker, combined floodgate driving piece and separating brake driving piece are equipped with the linkage groove, the handle separating brake or the combined floodgate of linkage groove and drive mechanism's transmission shaft cooperation operation circuit breaker, leave the reservation space who supplies the handle activity between combined floodgate operation portion and separating brake operation portion, this reservation space makes combined floodgate operating parts, separating brake operating parts does not contact with the handle when initial condition, can resume initial condition after combined floodgate driving piece or separating brake driving piece drive handle action, avoid combined floodgate driving piece or separating brake driving piece to produce the malfunction, cause the damage of circuit breaker.

In addition, the switching-on driving part and the switching-off driving part are independently arranged, a compression spring is arranged between the switching-on driving part and the switching-off driving part, when the switching-on driving part and the switching-off driving part are in an initial state, the switching-on driving part and the switching-off driving part cannot contact with a handle of the circuit breaker, and after switching-on or switching-off action, the switching-on driving part and the switching-off driving part are assisted to return to an initial position through the compression spring arranged between the switching-on driving; the first linkage groove is formed in the switching-on driving piece, the second linkage groove is formed in the switching-off driving piece, the first linkage groove and the second linkage groove are respectively provided with an open end, the open ends of the first linkage groove and the second linkage groove are staggered and opposite, and therefore the misoperation of a circuit breaker handle caused by the fact that the switching-on driving piece, the switching-off driving piece and a transmission shaft are not matched well is further avoided.

Drawings

Fig. 1 is a schematic structural view of an electrically operated device of the circuit breaker of the present invention;

Fig. 2 is a schematic structural view of a connection surface of an electrically operated device of the circuit breaker of the present invention;

Fig. 3 is a schematic view of an initial state of the electric operation device of the circuit breaker of the present invention;

Fig. 4 is a schematic diagram of the circuit breaker of the present invention when the electrically operated device is switched on;

Fig. 5 is a schematic diagram of the circuit breaker of the present invention when the electrically operated device is opened;

Fig. 6 is a schematic view (split type) of the internal structure of the electric operation device of the circuit breaker of the present invention;

Fig. 7 is a schematic view (split type) of the internal structure of the electric operation device of the circuit breaker of the present invention;

Fig. 8 is a schematic diagram of the internal structure of the electric operating device of the circuit breaker of the present invention (split type, without the first support);

Fig. 9 is a schematic structural view of a second support of the electrically operated device of the circuit breaker of the present invention;

Fig. 10 is a schematic view (initial state) of the transmission mechanism of the electric operation device of the circuit breaker of the present invention;

Fig. 11 is a schematic view of a transmission mechanism of an electric operating device of the circuit breaker of the present invention (closing state);

Fig. 12 is a schematic view of a closing driving member of the electric operation device of the circuit breaker of the present invention;

Figure 13 is a schematic view of a first linkage of the electrically operated device of the circuit breaker of the present invention;

Fig. 14 is a schematic view of the opening driving member of the electric operation device of the circuit breaker of the present invention;

FIG. 15 is an exploded view of FIG. 14;

Fig. 16 is a schematic view of the opening member of the electric operating device of the circuit breaker of the present invention (provided with a second linking groove);

Fig. 17 is a schematic view (integral type) of a driving member of the electric operation device of the circuit breaker of the present invention;

Fig. 18 is a schematic view (one-piece) of a linkage of the electrically operated device of the circuit breaker of the present invention;

Fig. 19 is a schematic view of the operation member and the buffer member of the electric operation device of the circuit breaker of the present invention;

Fig. 20 is a schematic view (one-piece) of the installation of the driving member of the electrically operated device of the circuit breaker of the present invention;

Fig. 21 is a schematic structural view (near the second bracket) of a control gear of the electric operating device of the circuit breaker of the present invention;

Fig. 22 is a schematic structural view (close to the first support) of the control gear of the electric operating device of the circuit breaker of the present invention.

Detailed Description

The following describes the embodiment of the electric operating device of the circuit breaker according to the present invention with reference to the embodiments shown in fig. 1 to 20. The electric operation device of the circuit breaker of the present invention is not limited to the description of the following embodiments.

As shown in fig. 1-5, an electric operating device for a circuit breaker is provided, in which a side wall of a housing 1 is provided with a first sliding groove 101 as an operating surface 11, the first sliding groove 101 is directly opposite to a handle 5 of the circuit breaker, a driving member for driving the handle 5 of the circuit breaker to open and close is installed in the housing 1, a sliding rod 102 is installed in the housing 1, the driving member is installed on the sliding rod 102, and the driving member can extend out of the housing 1 from the first sliding groove 101 and move along the first sliding groove 101 under the operation of a transmission mechanism in the housing 1 to operate the handle 5 of the circuit breaker to open or close.

The driving member includes a closing operation portion 31a and an opening operation portion 31b, as shown in fig. 3, in an initial state, a space is reserved between the closing operation portion 31a and the opening operation portion 31b of the driving member, the closing operation portion 31a is located below the opening operation portion 31b, and the handle 5 of the circuit breaker extends into the space. As shown in fig. 4, when the circuit breaker needs to be closed, the transmission mechanism drives the closing operation part 31a to move upwards along the first chute 101, and pushes the handle 5 of the circuit breaker to close upwards; as shown in fig. 5, when the circuit breaker needs to be opened, the transmission mechanism drives the opening operation part 31b to move downwards, and pushes the handle 5 of the circuit breaker to open the circuit breaker downwards. It should be noted that the up-down arrangement is opposite, and obviously, the opening operation part 31b is located below the closing operation part 31a, and the opening operation part 31b moves upwards to push the handle 5 of the circuit breaker to open. Preferably, in the initial state, that is, when the switching operation is not performed, both the closing operation part 31a and the opening operation part 31b do not contact the handle 5 of the circuit breaker, and after the closing drive or the opening drive drives the handle of the circuit breaker to operate, the circuit breaker can automatically return to the initial state to wait for the next command. The space reserved between the switching-on driving part and the switching-off driving part enables the switching-on driving part and the switching-off driving part not to be in contact with the handle 5 in the initial state, the initial state can be recovered after the switching-on driving part or the switching-off driving part drives the handle 5 to act, and the switching-on driving part or the switching-off driving part is prevented from generating misoperation to cause damage of the circuit breaker. Specifically, when the handle 5 of the switching-on driving part operating circuit breaker is switched on, the handle 5 of the switching-off driving part operating circuit breaker is restored to the initial state, and the handle 5 of the switching-off driving part operating circuit breaker is switched off, the switching-off driving part is restored to the initial state, so that the switching-on action of the switching-off driving part and the switching-on action of the switching-on driving part can be prevented from being interfered by the switching-on driving part.

The electric operating device arranged on the front surface of the breaker handle 5 instead of the side wall of the traditional breaker can be applied to a cabinet with limited transverse space, and the phenomenon that the breaker contacts are asynchronous due to the fact that the breaker is inclined in the process of operating the breaker handle 5 can be avoided, or the phenomenon that each pole of breaker is required to be independently provided with the electric operating device can be avoided.

As an embodiment, the widths of the closing operation part 31a and the opening operation part 31b may be widened as needed, and the handles 5 of the multi-pole circuit breaker may be driven to operate simultaneously.

Preferably, as an embodiment, as shown in fig. 3, a moving device 6 is further disposed on the electric operating device, a side wall opposite to the operating surface 11 is a connecting surface 12 on which the moving device 6 for displacement is mounted, the connecting surface 12 is shown in fig. 2, the electric operating device is mounted on a moving track (not shown in the figure) through the moving device 6, and the moving device 6 can drive the electric operating device to move along the moving track to correspond to the handles 5 of different circuit breakers respectively, so as to drive the different circuit breakers to perform different closing and opening actions.

As an example, as shown in fig. 6 and 7, a cradle is provided in a housing 1 of an electric operation device of a circuit breaker, and divides a space in the housing 1 into a driving space and a transmission space; the bracket specifically comprises a first bracket 103 and a second bracket 104 which are arranged at intervals, a space between the first bracket 103 and the second bracket 104 is used as a transmission space for installing a transmission device, and a space between the first bracket 103 and the operation surface 11 is used as a driving space for installing a driving part. Preferably, a slide bar 102 is installed in the driving space, and a driving member is slidably installed on the slide bar 102 and moves on the slide bar 102 along the first slide groove 101 under the operation of the transmission mechanism. The first bracket 103 and the second bracket 104 divide the space in the housing 1 into two relatively independent parts, so as to provide a working area for the transmission mechanism and the driving member, and avoid performance instability caused by mutual interference of various functional components.

Preferably, drive mechanism includes motor 201 and the gear train be connected with motor 201, the gear train includes divide-shut brake output gear, and divide-shut brake output gear is equipped with the transmission shaft, be equipped with on the driving piece with transmission shaft complex linkage groove, motor 201 drive gear group rotates, through the cooperation in the linkage groove of the transmission shaft of divide-shut brake output gear and driving piece, makes the driving piece slide on slide bar 102 and closes a floodgate or the separating brake with handle 5 of operation circuit breaker. The gear set is installed in a transmission space between the first bracket 103 and the second bracket 104.

Preferably, the transmission ratio of the switching-on/off output gear periodically changes to provide a periodically changing driving force and action speed for the driving member, the periodic transmission ratio of the switching-on/off output gear provides a larger driving force for the driving member in the early stage of switching-on, and provides a larger switching-on speed for the driving member in the later stage of switching-on, so as to reduce burning loss of contacts or faults of the circuit breaker. The optimal scheme is that the switching-on and switching-off output gear is preferably an elliptic gear, so that proper transmission force and lever ratio can be set, the driving part obtains periodically-changed driving force and action speed in switching-on and switching-off, contact burning or circuit breaker failure is avoided, the gear pair formed by the non-circular gears can realize the periodically-changed transmission ratio, the structure is compact, the rigidity is good, and the transmission is guaranteed to be stable. Obviously, the opening and closing output gear can also be a circular gear, but the periodic transmission ratio cannot be obtained.

In the embodiment of fig. 10 and 11, the switching-on/off output gear includes a switching-on output gear 205 and a switching-off output gear 206, the transmission shaft on the switching-on/off output gear includes a switching-on transmission shaft 205a disposed on the switching-on output gear 205 and a switching-off transmission shaft 206a disposed on the switching-off output gear 206, the switching-on transmission shaft 205a is used for operating the switching-on operation portion 31a of the driving member to switch on the handle 5 of the circuit breaker, and the switching-off transmission shaft 206a is used for operating the switching-off operation portion 31b of the driving member to switch off the handle. Preferably, the closing output gear 205 and the opening output gear 206 are engaged with each other, and can be driven and controlled at the same time.

The closing output gear 205 and the opening output gear 206 are preferably elliptical gears made of metal materials, pitch curves of the elliptical gears are elliptical or high-order ellipses, and because central angles corresponding to each gear tooth of the elliptical gears are not always equal, the closing output gear 205 and the opening output gear 206 do non-uniform rotation in the meshing rotation process, and the non-uniform rotation presents periodic rotation speed change. In the early stage of closing, that is, in the period from the start of closing to the time of closing, the long oval side of the opening output gear 206 is in contact fit with the short oval side of the closing output gear 205, so that the closing operation part 31a obtains a large closing driving force; in the later stage of closing, that is, in the period from the time of closing to the time of complete closing, the short oval side of the opening output gear 206 is in contact fit with the long oval side of the closing output gear 205, so that the closing operation part 31a obtains a faster closing speed; in the rotating process, the center distance is fixed, so that the closing output gear 205 and the opening output gear 206 are kept in good engagement constantly, and meanwhile, the transmission force and the action process of the lever and the circuit breaker are matched, so that the closing moment is fast, namely, the closing force in the early closing stage is increased at the moment when the moving contact is contacted with the fixed contact. The gear pair composed of the non-circular gears is adopted for the closing output gear 205 and the opening output gear 206, so that the periodically-changed transmission ratio can be realized, the structure is compact, the rigidity is good, and the stable transmission can be ensured; the oval gear made of metal materials is beneficial to prolonging the service life. Obviously, the closing output gear 205 and the opening output gear 206 can also be circular gears, but they cannot obtain a periodic transmission ratio.

Specifically, the gear set further comprises a primary gear 202, a secondary gear 203 and a tertiary gear 204; the motor 201 is meshed with a first-stage gear 202 through a worm, the first-stage gear 202 is meshed with a second-stage gear 203, the second-stage gear 203 is meshed with a third-stage gear 204, and a switching-on and switching-off output gear is mounted on the third-stage gear 204; as shown in fig. 8, 10 and 11, the third-stage gear 204 is provided with a closing output gear 205 and an opening output gear 206, the closing output gear 205 and the opening output gear 206 are engaged with each other, the closing output gear 205 and the third-stage gear 204 are driven by the same rotating shaft, the rotating shaft of the closing output gear 205 is eccentrically arranged, that is, the rotating shaft of the closing output gear 205 is not arranged at the center of the closing output gear 205, the opening output gear 206 is engaged with the closing output gear 205, the rotating shaft of the opening output gear 206 is eccentrically arranged, that is, the rotating shaft of the opening output gear 206 is not arranged at the center of the opening output gear 206, the closing output gear 205 is provided with a closing transmission shaft 205a, the opening output gear 206 is provided with an opening transmission shaft 206a, and the eccentric arrangement keeps the rotating centers of the two elliptic gears at a certain distance. Of course, the three-stage gear 204 and the opening output gear 206 may be driven by the same rotating shaft, and the closing output gear 205 may be driven by the opening output gear 206 to rotate.

As shown in fig. 21 and 22, the transmission mechanism further includes a control gear 207 and a plurality of position recognition switches, the control gear 207 is provided with a raised trigger platform 207a, the plurality of position recognition switches are fixedly installed in the housing 1 and are arranged on a circumference coaxial with the control gear 207 at intervals, preferably at a position close to one side of the second support 104 (see fig. 6 and 7 of the second support 104), and the plurality of position recognition switches are respectively used for cooperating with the trigger platform 207a to provide position signals to control the forward rotation, the reverse rotation and the stop rotation of the motor. The plurality of position recognition switches include an initial position recognition switch 208a, a closing position recognition switch 208b, and an opening position recognition switch 208 c; the control gear 207 and the opening output gear 206 are installed on the same rotating shaft, and the opening output gear 206 rotates to drive the control gear 207 to rotate. The motor 201 sequentially drives the closing output gear 205, the opening output gear 206 and the control gear 207 to rotate.

A switching-on process: when the motor 201 drives the closing output gear 205 to rotate in the closing direction under the transmission of the primary gear 202, the secondary gear 203, and the tertiary gear 204, taking the closing output gear to rotate counterclockwise (see the direction of fig. 22), at this time, the opening output gear 206, the control gear 207, and the trigger stage 207a all rotate clockwise (see the direction of fig. 21 as counterclockwise), the trigger stage 207a rotates from the initial position identification switch 208a to the closing position identification switch 208b, the closing output gear 205 makes the closing operation part 31a of the closing driving member operate the handle 5 of the circuit breaker through the closing transmission shaft 205a, when the trigger stage 207a triggers the closing position identification switch 208b, the motor 201 is controlled to rotate in the opening direction in reverse, when the trigger stage 207a triggers the initial position identification switch 208a, the closing operation part 31a is controlled to return to the initial position, the motor 201 stops rotating.

The brake opening process: when the motor 201 drives the closing output gear 205 to rotate towards the opening direction under the transmission of the primary gear 202, the secondary gear 203 and the tertiary gear 204, taking the clockwise rotation of the closing output gear 205 (see the direction of fig. 22) as an example, at this time, the opening output gear 206, the control gear 207 and the trigger stage 207a all rotate counterclockwise (see the direction of fig. 21 as clockwise rotation), the trigger stage 207a rotates from the initial position identification switch 208a to the opening position identification switch 208c, the opening output gear 206 rotates in the opening direction, and the opening operation portion 31b operates the handle 5 of the circuit breaker to open through the opening transmission shaft 206a, when the trigger stage 207a triggers the switch-off position recognition switch 208c, the motor 201 is controlled to rotate in the reverse direction to the switch-on direction, when the trigger base 207a triggers the initial position identification switch 208a, the opening operation portion 31b is controlled to return to the initial position.

The invention provides in-place signals of closing, opening and initial positions through a plurality of position identification switches to control the positive rotation and the reverse rotation of the motor, the position identification switches and the control motor 201 can be respectively connected with a control circuit, the control circuit can be realized through a circuit or a single chip microcomputer, and the control circuit can be arranged in the shell 1 or outside the object 1 and controlled in a remote mode.

As an implementation, be equipped with the transmission shaft on the drive mechanism, the driving piece includes closing drive spare and separating brake driving piece, closing drive spare and separating brake driving piece are equipped with closing operation portion 31a and separating brake operation portion 31b respectively, closing drive spare and separating brake driving piece are equipped with the linkage groove respectively, and the linkage groove of both is equipped with the uncovered of opposite direction and is used for periodicity and drive mechanism's transmission shaft cooperation, separation. Preferably, the driving part comprises a linkage part connected with the transmission mechanism, and a linkage groove is formed in the linkage part and used for being connected with the transmission shaft.

The linkage groove of the driving part can convert the circular motion of the switching-on and switching-off output gear into linear motion, the driving part does linear motion in the first sliding groove 101 under the coordination of the linkage groove and the transmission shaft, the switching-on operation part 31a and the switching-off operation part 31b of the driving part respectively operate the switching-on and switching-off of the handle 5 of the circuit breaker, and the linear motion of the driving part is preferably carried out along the sliding rod 102. Specifically, as shown in fig. 8, the linkage groove of the switching-on driving member is a first linkage groove 30a, and the linkage groove of the switching-off driving member is a second linkage groove 30c, and when the transmission shaft is matched with the first linkage groove 30a on the switching-on driving member, the transmission shaft is separated from the second linkage groove 30c of the switching-off driving member to prevent the switching-off driving member from generating false operation; when the transmission shaft is engaged with the second interlocking groove 30c of the opening driving member, the transmission shaft is separated from the first interlocking groove 30a of the closing driving member to prevent the closing driving member from generating a malfunction.

Specifically, as shown in fig. 8, 13, and 15, the transmission shaft includes a closing transmission shaft 205a and an opening transmission shaft 206a, the first linkage groove 30a and the second linkage groove 30c both include a closed end and an open end, the closed end of the first linkage groove 30a cooperates with the closing transmission shaft 205a to drive the first linkage member to move, and the open end of the first linkage groove 30a is used to enable the closing transmission shaft 205a to rotate out after closing is completed so as to separate from the first linkage member, thereby preventing the closing operation portion 31a from generating a malfunction during opening; similarly, the closed end of the second linkage groove 30c cooperates with the opening transmission shaft 206a to drive the second linkage member to move, and the open end of the second linkage member is used for enabling the opening transmission shaft 206a to rotate out after opening, so as to realize separation from the second linkage member, and prevent the opening operation part 31b from generating misoperation during closing.

Specifically, as shown in fig. 7 and 8, the driving member includes a linkage member and an operating member driven by the linkage member, the transmission mechanism is connected to the linkage member, the linkage member is mounted on the sliding rod 102, the operating member is linked to the linkage member, a linkage groove is formed in the linkage member for connecting to the transmission shaft, and the operating member is provided with a closing operation portion 31a and an opening operation portion 31 b. The linkage member specifically comprises a first linkage member and a second linkage member, the first linkage member is provided with a first linkage groove 30a periodically matched with the switching-on transmission shaft 205a, and the second linkage member is provided with a second linkage groove 30c periodically matched with the switching-off transmission shaft 206 a; the operation element includes a closing member provided with a closing operation portion 31a and an opening member provided with an opening operation portion 31 b. Preferably, an elastic buffer 4 is arranged between the linkage and the operating element, and the elastic buffer 4 is used for absorbing the switching-on and switching-off allowance and preventing the handle 5 from being subjected to hard impact by the switching-on operation part 31a and the switching-off operation part 31b, so that the handle 5 cannot be accurately pushed to the position and even is broken. Of course, the elastic buffer 4 may not be provided, or may be provided only on the closing driving member, and the opening driving member may be omitted.

As shown in fig. 12 and 14, the driving members include a closing driving member provided with a closing operation portion 31a and an opening driving member provided with an opening operation portion 31b, and the closing member and the opening member are operating members driven by the link member. Specifically, the switching-on driving member includes a first linkage member and a switching-on member, the first linkage member is mounted on the sliding rod 102, the switching-on member is mounted on the sliding rod 102 and is linked with the first linkage member, the first linkage member is provided with a first linkage groove 30a matched with the switching-on transmission shaft 205a, the switching-on member is provided with a switching-on operation part 31a for operating the handle 5 of the circuit breaker, and an elastic buffer member 4 is preferably arranged between the first linkage member and the switching-on member; the opening driving part comprises a second linkage part and an opening part, the second linkage part is arranged on the sliding rod 102, the opening part is arranged on the sliding rod 102 and is linked with the second linkage part, a second linkage groove 30c matched with the opening transmission shaft 206a is arranged on the second linkage part, an opening operation part 31b used for operating a handle 5 of the circuit breaker is arranged on the opening part, and an elastic buffer part 4 is preferably arranged between the second linkage part and the opening part.

The switching-on driving part and the switching-off driving part are arranged independently, and the switching-on driving part and the switching-off driving part are respectively driven by the transmission mechanism to switch on and switch off a handle 5 for operating the circuit breaker. As shown in fig. 6, a compression spring 7 is disposed between the closing driving member and the opening driving member, and the compression spring 7 is used for assisting the resetting of the closing driving member and the opening driving member, and reducing the clearance effect when the closing driving member and the opening driving member are matched; the linear motion of the switching-on driving part in the switching-on process enables the compression spring 7 to deform and store energy, and after the switching-on is finished, the elasticity of the compression spring 7 provides auxiliary driving force for the switching-on driving part to return to the initial position; in a similar way, the linear motion of the opening driving piece in the opening process enables the compression spring 7 to deform and store energy, and the elastic force of the compression spring 7 provides auxiliary driving force for the opening driving piece to return to the initial position. Preferably, the sliding rod 102 between the closing driving member and the opening driving member is sleeved with a compression spring 7, which can be used as the compression spring 7 or can provide a driving force for the resetting of the first linkage member and the second linkage member, so as to ensure the resetting speed.

As shown in fig. 13, the first linkage member is formed by sequentially connecting a first linkage wall 301, a third linkage wall 303 and a second linkage wall 302 to form a U-shaped structure with an opening facing the first sliding chute 101, through holes for the sliding rod 102 to pass through are formed on the opposite first linkage wall 301 and second linkage wall 302, and a connecting groove 30b for connecting and engaging the brake member is formed on the first linkage wall 301; the third linkage wall 303 is provided with a first linkage groove 30a, the inner diameters of the first linkage groove 30a are substantially equal, the first linkage groove 30a has a closed end and an open end, the first linkage groove 30a includes a first straight section and a first arc section which are communicated, the first straight section is perpendicular to the sliding rod 102, the first arc section is in a shape of a quarter arc, the closed end is located at the end of the first straight section, the first straight section is parallel to the first linkage wall 301, the open end is located at the end of the first arc section, the open end is arranged at the connection position of the second linkage wall 302 and the third linkage wall 303, and when the motor 201 rotates to drive the closing output gear 205 of the transmission mechanism to rotate in the closing direction, the closing transmission shaft 205a rotates into the first linkage groove 30a from the open end of the first linkage groove 30a and rotates along the first linkage groove 30 a.

As shown in fig. 12, the closing element is preferably smaller than the first link member and is disposed inside the first link member, the closing member is formed by connecting a first side wall 311, a first connecting wall 315 and a second side wall 312 in sequence to form a U-shaped structure, through holes for passing through the sliding rod 102 are formed on the opposite first side wall 311 and second side wall 312, the first connecting wall 315 passes through the connecting groove 30b of the first linkage member to enable the second side wall 312 of the closing member to be positioned inside the first linkage member, an elastic buffer 4 is sleeved on the sliding rod 102 between the second side wall 312 and the first linkage, a closing operation part 31a for operating the circuit breaker handle 5 to close is arranged on the first side wall 311 or the second side wall 312, the closing operation part 31a protrudes from the first sliding chute 101 and is preferably formed by extending a middle edge of the first sidewall 311 toward the first sliding chute 101, and an end of the closing operation part 31a is bent downward.

As shown in fig. 15, the second linkage member is formed by sequentially connecting a fourth linkage wall 304, a sixth linkage wall 306 and a fifth linkage wall 305 to form a U-shaped structure, through holes for the sliding rod 102 to pass through are formed in the fourth linkage wall 304 and the fifth linkage wall 305 which are opposite to each other, an arc-shaped second linkage groove 30c is formed in the sixth linkage wall 306, and the opening transmission shaft 206a extends into the second linkage groove 30c to drive the second linkage member to move. The second linkage groove 30c includes a second straight section and a second arc section which sequentially include the communication, the second straight section is parallel to the sliding rod 102, the second arc section is close to the semicircle arc shape, the closed end is located at the end of the second arc section, one side of the second arc section is an arc side wall, the other side is a straight side wall, the open end is located at the end of the second straight section, and the opening of the open end is arranged at the joint of the fourth linkage wall 304 and the sixth linkage wall 306. When the opening transmission shaft 206a rotates from the open end to the closed end along the arc side wall to drive the second linkage member to move, then rotates out along the linear side wall to separate from the second linkage member, and misoperation is prevented during closing.

The opening member is arranged in the second linkage member, the opening member is formed by sequentially connecting a third side wall 313, a second connecting wall 316 and a fourth side wall 314 to form a U-shaped structure, through holes for the sliding rod 102 to pass through are formed in the opposite third side wall 313 and fourth side wall 314, an opening operation part 31b for opening the handle 5 of the circuit breaker is arranged on the third side wall 313 or the fourth side wall 314, preferably, the opening operation part 31b is integrally formed by the third side wall 313, the opening operation part 31b is integrally formed into a U-shaped body with an upward opening, and the U-shaped body is provided with a long side wall for being connected with the third side wall 313 and a short side wall for being contacted with the handle 5 of the circuit breaker. The opening member is located between the fourth linkage wall 304 and the fifth linkage wall 305, and the sliding rod 102 located between the fourth side wall 314 and the fourth linkage wall 304 is sleeved with an elastic buffer member 4, and the elastic buffer member 4 is preferably a spring.

Specifically, as an embodiment, as shown in fig. 6 and 16, the second linking groove 30c may be disposed on the second linking wall 315 of the opening member, and no linking member is disposed, the opening of the opening end of the second linking groove 30c is disposed at the connection position of the third side wall 313 and the second linking wall 316, and the opening end of the second linking groove 30c is disposed at the connection position of the second linking groove 30c and the second linking wall 316, so that the second linking member and the elastic buffer member 4 disposed between the second linking member and the opening member can be omitted, and the opening member in fig. 6 is the one in which the second linking member and the elastic buffer member 4 are omitted.

It should be noted that, since the closing output gear 205 and the opening output gear 206 are engaged with each other and the rotation directions of the two are opposite, the open ends of the first and second linking grooves 30a and 30c are misaligned and opposite to each other, the closed ends of the two are misaligned and opposite to each other, and the direction from the open end to the closed end of the first linking groove 30a is opposite to the direction from the open end to the closed end of the second linking groove 30c and the rotation directions of the two are opposite to each other. As shown in fig. 8, the closed end of the first linking groove 30a is on the left of the first linking member, and the closed end of the second linking groove 30c is on the right of the second linking member; the open end of the first linking groove 30a is positioned at the upper right of the first linking member, and the open end of the second linking groove 30c is positioned at the lower left of the second linking member.

As shown in the embodiment of fig. 17 to 20, a linkage and an operation member are used, and the closing operation portion 31a and the opening operation portion 31b are integrated. The driving part comprises a linkage part and an operating part, the linkage part is matched with the transmission mechanism, the linkage part is arranged on the sliding rod 102, the operating part is arranged on the sliding rod 102 and is linked with the linkage part, and an elastic buffer part 4 is arranged between the linkage part and the operating part; the linkage piece is provided with a linkage groove 3a, and the operating piece comprises a closing operation part 31a and an opening operation part 31b which are connected together; the switching-on and switching-off output gear of the transmission mechanism is provided with a transmission shaft, the transmission shaft is matched with the linkage groove 3a to drive the driving piece to do linear motion along the sliding rod 102, the switching-on operation part of the operation piece is used for switching on the handle 5 of the operation circuit breaker, and the switching-off operation part is used for switching off the handle 5 of the operation circuit breaker.

In this embodiment, the transmission mechanism only needs to be provided with one opening and closing output gear, and does not need to be provided with the closing output gear 205 and the opening output gear 206, the opening and closing output gear is provided with one opening and closing transmission shaft, the opening and closing output gear can be a circular gear, the opening and closing transmission shaft is connected with the linkage groove 3a of the linkage member, the handle 5 of the circuit breaker is closed by operating the closing operation portion 31a, and the handle 5 of the circuit breaker is opened by operating the opening operation portion 31 b.

As shown in fig. 17 and 18, the linkage member is formed by connecting two transverse linkage walls 31 and a vertical linkage wall 32 to form a U-shaped structure with an opening facing the first sliding chute 101, the two transverse linkage walls 31 are provided with through holes for the sliding rod 102 to pass through, the vertical linkage wall 32 is provided with a linkage groove 3a, and the linkage groove 3a is matched with the transmission mechanism to enable the linkage member to drive the driving member to move along the sliding rod 102 to operate the opening or closing of the handle 5 of the circuit breaker. Preferably, the linkage groove 3a arranged on the vertical linkage wall 32 is a strip-shaped linkage groove 3a with two closed ends, the central axis of the linkage groove 3a is perpendicular to the sliding rod 102, and the opening and closing transmission shaft extends into the linkage groove 3a to drive the linkage part to move linearly along the sliding rod.

As shown in fig. 19, in an embodiment, the operating element is disposed inside the linkage and extends out of the first sliding chute 101 to operate the handle 5 of the circuit breaker, the operating element includes a closing side wall and an opening side wall, the closing side wall and the opening side wall are connected to form a U-shaped structure with an opening facing the first sliding chute 101, the closing side wall and the opening side wall are provided with through holes for the sliding rod 102 to pass through, the sliding rod 102 between the closing side wall and one transverse linkage wall 31 is sleeved with an elastic buffer 4, the edge of the closing side wall is used as a closing operation portion 31a, the sliding rod 102 between the opening side wall and the other transverse linkage wall 31 is sleeved with an elastic buffer 4, the edge of the opening side wall is used as an opening operation portion 31b, in order to save space and increase the distance between the closing operation portion 31a and the opening operation portion 31b, the closing side wall and the opening side wall are preferably stepped, therefore, the closing side wall and the opening side wall are connected to form a symmetrical U-shaped structure with an opening gradually enlarged, and the through holes for the sliding rod 102 to pass through on the closing side wall and the opening side wall are arranged on one side close to the linkage part.

The utility model provides a driving piece both can be the split type separating brake driving piece, the separating brake driving piece that set up alone, also can be the driving piece of integral type, can design the driving piece kind according to the handle needs of circuit breaker like this, make the utility model discloses the electric operating means of circuit breaker has extensive suitability.

In order to optimally divide the space in the housing 1, it is preferable that the first and second brackets 103 and 104 divide the space in the housing 1 into a driving space and a transmission space, and as shown in fig. 6 and 7, a first engaging portion 103a and a second engaging portion 103b are provided at the lower end and the upper end of the first bracket 103, respectively, the first and second engaging portions 103a and 103b are formed by bending the lower end and the upper end of the first bracket 103 in the direction of the operation surface 11, respectively, and a mounting area for mounting the slide lever 102 is provided between the first and second engaging portions 103a and 103 b.

The second bracket 104 is provided with two connecting ear plates 104a for mounting the mobile device 6 as shown in fig. 9, the number of the connecting ear plates 104a is two as shown in fig. 2, the two connecting ear plates 104a are oppositely arranged on one side of the second bracket 104 close to the connecting surface 12, the connecting surface 12 is provided with a through hole for the connecting ear plate 104a to penetrate out, the mobile device 6 is fixedly mounted between the two connecting ear plates 104a penetrating out of the housing 1, and the number of the connecting ear plates 104a is not limited to two; a limiting plate 104b is arranged at one end of the second bracket 104, and the limiting plate 104b is used for limiting the transmission mechanism.

The transmission mechanism comprises a motor 201 and a gear set connected with the motor 201, and the gear set is arranged in a transmission space between the first bracket 103 and the second bracket 104; the second support 104 is longer than the first support 103, and the motor 201 is mounted between the second support 104 and the first support 103 and at a position below the first positioning portion 103a of the first support 103; the middle parts of the upper end and the lower end of the second bracket 104 are bent towards the direction of the connecting surface 12 to form connecting lug plates 104 a; a side wall beside the connecting ear plate 104a extends towards the middle part and bends towards the direction of the operating surface 11 to form a bent limiting plate 104b, an arc-shaped groove in a transmission mechanism matched with the motor 201 is arranged in the middle part of the bent limiting plate 104b, the arc-shaped groove is specifically used for penetrating through a rotating shaft of the motor 201, and preferably, the arc-shaped groove is arranged at the lower side of the limiting plate 104b to be beneficial to the stable installation of the motor 201; be equipped with a plurality of mounting holes that are used for installing the gear train on the face of second support 104, set up the limiting plate 104b that connects otic placode 104a and be used for fixed motor 201 who wears out casing 1 on second support 104, make second support 104 stably be fixed in the casing 1 of circuit breaker, do benefit to and provide stable operational environment for drive mechanism.

Furthermore, the first support 103 and the second support 104 are preferably made of metal materials, which is beneficial to increase the use strength and prolong the service life.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims (10)

1. An electrically operated device of a circuit breaker, comprising a housing (1), characterized in that: a transmission mechanism is arranged in the shell (1); a side wall of the shell (1) is provided with a first sliding groove (101) communicated with the inside of the shell (1) as an operating surface (11), a sliding rod (102) is installed in the shell (1), a driving piece controlled by a transmission mechanism is installed on the sliding rod (102), the transmission mechanism is provided with a transmission shaft, the driving piece comprises a closing driving piece and an opening driving piece, the closing driving piece and the opening driving piece are respectively provided with a closing operation part (31a) and an opening operation part (31b), the closing driving piece and the opening driving piece are respectively provided with a linkage groove matched with the transmission shaft, the closing operation part (31a) and the opening operation part (31b) penetrate through the first sliding groove (101) to extend out of the shell (1), and the transmission mechanism respectively drives the closing driving piece and the opening driving piece to move along the sliding rod (102) through the cooperation of the transmission shaft and the linkage groove, make the closing operation part (31a) and the opening operation part (31b) respectively operate the handle (5) of the breaker to close and open;

The space is reserved between closing operation portion (31a) and separating brake operation portion (31b), and handle (5) of circuit breaker stretch into in this reserved space, during initial condition, when not carrying out the divide-shut brake operation promptly, closing operation portion (31a) and separating brake operation portion (31b) all can not contact the handle of circuit breaker to can resume initial condition after closing driving piece or separating brake driving piece drive circuit breaker's handle action.

2. The electrically operated device of a circuit breaker according to claim 1, characterized in that: the transmission mechanism comprises a motor (201) and a gear set connected with the motor (201), the gear set comprises a closing output gear (205), a separating brake output gear (206) and a control gear (207), the closing output gear (205) is provided with a closing transmission shaft (205a) matched with a closing driving piece, and the separating brake output gear (206) is provided with a separating brake transmission shaft (206a) matched with a separating brake driving piece; the control gear (207) is provided with a raised trigger platform (207a), a plurality of position identification switches are arranged on the circumference coaxial with the control gear (207) at intervals and are matched with the trigger platform (207a), and the position identification switches comprise an initial position identification switch (208a), a switching-on position identification switch (208b) and a switching-off position identification switch (208 c);

When the circuit breaker is switched on, the motor (201) drives the switching-on output gear (205) and the control gear (207) to rotate, the switching-on output gear (205) rotates towards the switching-on direction and enables the switching-on operation part (31a) to operate a handle (5) of the circuit breaker to be switched on through the switching-on transmission shaft (205a), when the trigger platform (207a) triggers the switching-on position identification switch (208b), the motor (201) rotates reversely, when the trigger platform (207a) triggers the initial position identification switch (208a), the switching-on operation part (31a) returns to the initial position, and the motor (201) stops rotating;

During opening, the motor (201) drives the opening output gear (206) and the control gear (207) to rotate, the opening output gear (206) rotates towards the opening direction and enables the opening operation part (31b) to operate the handle (5) of the breaker to open through the opening transmission shaft (206a), when the trigger platform (207a) triggers the opening position identification switch (208c), the motor (201) rotates in the reverse direction, when the trigger platform (207a) triggers the initial position identification switch (208a), the opening operation part (31b) returns to the initial position, and the motor (201) stops rotating.

3. The electrically operated device of a circuit breaker according to claim 1, characterized in that: and a compression spring (7) is arranged between the closing driving part and the opening driving part, and the compression spring (7) is matched with the closing driving part and the opening driving part in an auxiliary manner to reset.

4. The electrically operated device of a circuit breaker according to claim 2, characterized in that: the switching-on driving part comprises a first linkage part and a switching-on part, the first linkage part is installed on the sliding rod (102), the switching-on part is installed on the sliding rod (102) and is linked with the first linkage part, the first linkage part is provided with a first linkage groove (30a) matched with the switching-on transmission shaft (205a), and the switching-on part is provided with a switching-on operation part (31 a); and/or the brake-separating driving part comprises a second linkage part and a brake-separating part, the second linkage part is arranged on the sliding rod (102), the brake-separating part is arranged on the sliding rod (102) and is linked with the second linkage part, the second linkage part is provided with a second linkage groove (30c) matched with the brake-separating transmission shaft (206a), and the brake-separating part is provided with a brake-separating operation part (31 b).

5. The electrically operated device of a circuit breaker according to claim 4, wherein: the first linkage groove (30a) and the second linkage groove (30c) each comprise an open end and a closed end; the closed end of the first linkage groove (30a) is matched with the closing transmission shaft (205a) to drive the first linkage part to move, and the open end of the first linkage groove (30a) is used for enabling the closing transmission shaft (205a) to rotate out after closing is finished so as to realize separation from the first linkage part; the closed end of the second linkage groove (30c) is matched with the opening transmission shaft (206a) to drive the second linkage member to move, and the open end of the second linkage member is used for enabling the opening transmission shaft (206a) to rotate out after opening is finished so as to realize separation from the second linkage member.

6. The electrically operated device of a circuit breaker according to claim 5, wherein: the open end of the first linkage groove (30a) is opposite to the open end of the second linkage groove (30c) in a staggered mode, the direction from the open end to the closed end of the first linkage groove (30a) is opposite to the direction from the open end to the closed end of the second linkage groove (30c), and the closing output gear (205) and the opening output gear (206) are meshed with each other.

7. The electrically operated device of a circuit breaker according to claim 4, wherein: the first linkage piece is formed by sequentially connecting a first linkage wall (301), a third linkage wall (303) and a second linkage wall (302) to form a U-shaped structure with an opening facing the first sliding groove (101); the first linkage groove (30a) is arranged on the third linkage wall (303), through holes for the sliding rod (102) to pass through are formed in the opposite first linkage wall (301) and the second linkage wall (302), the closing piece is smaller than the first linkage piece and is arranged in the first linkage piece, the closing piece is sequentially connected through a first side wall (311), a first connecting wall (315) and a second side wall (312) to form a U-shaped structure, through holes for penetrating and connecting the sliding rod (102) are formed in the opposite first side wall (311) and the second side wall (312), and an elastic buffer piece (4) is sleeved on the sliding rod (102) between the second side wall (312) and the first linkage piece;

The second linkage part is formed by sequentially connecting a fourth linkage wall (304), a sixth linkage wall (306) and a fifth linkage wall (305) to form a U-shaped structure; the fourth linkage wall (304) and the fifth linkage wall (305) which are opposite to each other are provided with through holes for the sliding rod (102) to pass through, the second linkage groove (30c) is formed in the fourth linkage wall (304), the brake separating piece is arranged in the second linkage piece, the brake separating piece is formed by sequentially connecting a third side wall (313), a second connecting wall (316) and a fourth side wall (314) to form a U-shaped structure, the third side wall (313) and the fourth side wall (314) which are opposite to each other are provided with through holes for the sliding rod (102) to pass through, the brake separating piece is positioned between the fourth linkage wall (304) and the fifth linkage wall (305), and the sliding rod (102) positioned between the fourth side wall (314) and the fourth linkage wall (304) is sleeved with an elastic buffer piece (4).

8. The electrically operated device of a circuit breaker according to claim 5, wherein: first linkage groove (30a) is including the first straight section and the first circular arc section of intercommunication, first straight section perpendicular to slide bar (102), the blind end is located first straight section tip, and the end of opening is located first circular arc section tip, and its uncovered setting is in the junction of second linkage wall (302) and third linkage wall (303).

9. The electrically operated device of a circuit breaker according to claim 5, wherein: the second linkage groove (30c) comprises a second straight section and a second arc section which sequentially comprise communicated parts, the second straight section is parallel to the sliding rod (102), the second arc section is close to a semicircle and is arc-shaped, the closed end is positioned at the end part of the second arc section, one side of the second arc section is an arc side wall, the other side of the second arc section is a straight side wall, the open end is positioned at the end part of the second straight section, and the opening of the open end is arranged at the joint of the fourth linkage wall (304) and the sixth linkage wall (306).

10. The electrically operated device of a circuit breaker according to claim 7, wherein: the first linkage wall (301) is provided with a connecting groove (30b) for connecting the closing piece, and the first connecting wall (315) penetrates through the connecting groove (30b) of the first linkage piece to enable the second side wall (312) of the closing piece to be positioned inside the first linkage piece; a closing operation part (31a) is arranged on the first side wall (311), the closing operation part (31a) extends out of the first sliding chute (101) and is formed by extending the middle edge of the first side wall (311) to the direction of the first sliding chute (101), and the end part of the closing operation part (31a) is bent downwards; and a switching-off operation part (31b) is arranged on the third side wall (313), the switching-off operation part (31b) is integrally formed by the third side wall (313), the switching-off operation part (31b) is integrally in a U-shaped body with an upward opening, and the U-shaped body is provided with a long side wall used for being connected with the third side wall (313) and a short side wall used for being contacted with a handle (5) of the circuit breaker.

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