CN211629000U - Electric operating mechanism for circuit breaker - Google Patents

Abstract

The utility model relates to an electric operating mechanism for circuit breaker, there are protection flip subassembly, collection subassembly and the pressing assembly that is used for pressing circuit breaker pressure testing button that are used for covering the binding post on the circuit board, the safety lock subassembly action touches first micro-gap switch and closes remote control, the apron subassembly action touches first micro-gap switch and closes remote control, safety lock subassembly and apron subassembly between spacing each other; after having adopted above-mentioned structure, through the interference between safety lock subassembly and the apron subassembly, when overhauing, can not carry out the combined floodgate operation through the manual control drive shaft to the remote combined floodgate action of remote end is stopped in control through first micro-gap switch, this structure sets up when overhauing and neither can remote end electric operation nor can local end manual operation behind the lock-out state, simultaneously, will combine with the protection to binding post and mounting hole to the collection of circuit breaker operating condition, improved the holistic security level of electric operating mechanism.

Description

Electric operating mechanism for circuit breaker

Technical Field

The utility model belongs to the technical field of circuit breaker automatic control technique and specifically relates to a higher electrically-operated mechanism of security is related to.

Background

The circuit breaker is a switching device for switching on or switching off a circuit, and the opening and closing operations of the circuit breaker can be controlled manually locally or remotely through an electric operating mechanism, so that automatic control is realized; when a line is overhauled, an overhaul worker can overhaul the circuit breaker after opening the circuit breaker, the overhaul worker usually needs to manually carry out opening operation in the overhaul work, most of the electric operation mechanisms realize opening by shifting a handle of the circuit breaker through a key to rotate a driving shaft, most of the electric operation mechanisms touch a microswitch through rotating a safety lock to cut off the power of a motor after the manual operation, and the operation of a remote end is cut off, so that the remote end in the overhaul circuit of the overhaul worker is prevented from switching on; although the control of the remote end is stopped in the above mode, as the driving shaft hole is in an open state, other maintainers can perform switching-on operation through the driving shaft, so that safety accidents happen to the maintainers who are overhauling the line, and irreparable loss is caused; meanwhile, the existing electric operating mechanism does not collect the working state of the circuit breaker and protect the wiring terminal.

Disclosure of Invention

The utility model aims to solve the technical problem that an electric operating mechanism for circuit breaker is provided, can play the control that cuts off local end and long-range end when the maintenance, gather and protect the wiring terminal set and same mechanism in with operating condition simultaneously.

The utility model provides a technical scheme that its technical problem adopted is: an electric operating mechanism for a circuit breaker comprises a shell, a mounting seat arranged at the bottom of the shell, a middle partition plate and a mounting plate arranged at the middle of the shell, a panel arranged at the top of the shell, a motor arranged on the middle partition plate, a reduction gearbox driven by the motor, a driving shaft driven by the reduction gearbox, a cam component arranged at the bottom of the driving shaft, a slider component arranged on the mounting plate, a first micro switch used for closing remote control and a circuit board used for receiving and sending a control signal, wherein the cam component drives the slider component to reciprocate, an operating hole is formed in the panel, a cover plate component used for covering the operating hole is arranged on the operating hole, a safety lock component is arranged on the middle partition plate, and the electric operating mechanism is characterized by further comprising a protective flip component used for covering a wiring terminal on the circuit board, a collecting component used for collecting the working state of the circuit breaker and a pressing component used for pressing a, the safety lock assembly acts to touch the first microswitch to close the remote control, the cover plate assembly acts to touch the first microswitch to close the remote control, and the safety lock assembly and the cover plate assembly are mutually limited; when the safety lock assembly is locked, the cover plate assembly cannot be opened and the first microswitch cannot be operated at the same time; when the cover plate assembly is opened, the safety lock assembly cannot be locked and the first microswitch cannot be operated at the same time.

Further specifically, the safety lock assembly comprises a lock cylinder capable of rotating through a key, a driving piece fixed on the lock cylinder and rotating along with the lock cylinder, and a safety slider arranged between the driving piece and the first microswitch, wherein a contact part contacting with the driving piece is arranged on one side of the safety slider close to the driving piece, and the contact part extends to the initial position of the driving piece and contacts with the driving piece; the lock cylinder rotates to drive the driving piece to rotate, and the driving piece starts to push the contact part from the initial position so that the safety slide block moves forwards to a working state and is in contact with the first microswitch; the contact part is close to the side of the safety slide block, and an arc is arranged on one side of the contact part close to the middle position of the safety slide block.

More specifically, the driving member comprises a first sleeve fixed on the lock cylinder, a driving block extending outwards from the cylindrical surface of the first sleeve along the radial direction, and a limiting block, the driving block is in contact with the contact part and pushes the safety slide block to move, and the limiting block limits the slide block assembly to perform closing movement; the limiting block and the sliding block component are limited mutually.

The cover plate assembly comprises a cover plate for covering the operation hole, a cover plate sliding groove arranged on the lower surface of the panel, a shifting column for driving the cover plate to slide in the cover plate sliding groove and a touch block for touching the first micro switch, wherein a first elongated waist hole is arranged at the position of the cover plate close to the side of the cover plate sliding groove, at least one first waist hole is provided, two L-shaped limit blocks extend downwards from the lower surface of the panel, the feet of the two L-shaped limit blocks are arranged oppositely, and the cover plate sliding groove is formed by the two L-shaped limit blocks and the lower surface of the panel; a fourth inclined plane is arranged on the sole surface of the L-shaped limiting block and matched with the first waist hole; when the cover plate is clamped in the cover plate sliding groove, the fourth inclined surface forces the edge of the first waist hole to deform inwards until the cover plate enters the cover plate sliding groove; the cover plate is provided with an in-place buckle, an in-place clamping groove is formed beside the cover plate sliding groove, and the in-place buckle and the in-place clamping groove are matched to close and open the cover plate for positioning.

Further specifically, a positioning column is arranged on the panel, a first locking hole is formed in the positioning column, a second locking hole is formed in the shifting column, when the cover plate covers the operation hole, the shifting column abuts against the positioning column, and the first locking hole is aligned with the second locking hole and locked through lead sealing.

More specifically, the protective flip assembly comprises a first flip plate arranged on the panel, a second flip plate extending downwards from the end of the first flip plate, rotating shafts arranged on two sides of the first flip plate, and rotating holes arranged on the panel and matched with the rotating shafts; at least one mounting hole on the panel is arranged below the first flip plate; an indication window is arranged on the first flip plate and used for observing the working state; first flip board on set up first latch fitting the panel on set up the second latch fitting, first latch fitting and second latch fitting cooperation and through the lead sealing locking.

Further specifically, the collection assembly comprises a trigger piece arranged on the driving shaft and triggered pieces arranged on a middle partition board beside the driving shaft, the triggered pieces are at least two, the trigger piece rotates to trigger the triggered pieces to contact, and each triggered piece collects different working states of the circuit breaker or collects different working states of the triggered pieces in a matched mode.

Further specifically, the triggered part has two parts, namely a first triggered part and a second triggered part, the first triggered part is closed and the second triggered part is opened to acquire an opening signal, the first triggered part is opened and the second triggered part is closed to acquire a closing signal, the first triggered part and the second triggered part are both closed or the first triggered part and the second triggered part are both opened to acquire a tripping signal.

Further specifically, the subassembly of pressing down including the auxiliary rod of pressing down that is used for pressing circuit breaker test button, the test button contact other end of pressing down auxiliary rod one end and circuit breaker stretch out to the panel on set up a through-hole, the auxiliary rod of pressing down stretch into to the through-hole the mount pad on set up a constant head tank, the auxiliary rod of pressing down insert in the constant head tank and press and set up reset spring between the auxiliary rod and be used for will pressing down the auxiliary rod and reset, the constant head tank on set up the locating part and be used for limiting the reset position who presses the auxiliary rod.

The auxiliary pressing rod comprises a rod body and a pressing part extending out of the side of the rod body, the bottom of the rod body is inserted into the positioning groove, and the bottom of the pressing part is in contact with the test button; a limiting part extends out of the side of the rod body, and interference is generated between the limiting part and the sliding block component.

The utility model has the advantages that: after the structure is adopted, through interference between the safety lock assembly and the cover plate assembly, when overhauling is carried out, the switching-on operation can not be carried out through manually controlling the driving shaft, and the remote control is closed through the first microswitch, so that the remote switching-on action of a remote end is avoided; meanwhile, the collection of the working state of the circuit breaker is combined with the protection of the wiring terminal and the mounting hole, and the overall safety level of the electric operating mechanism is improved.

Drawings

Fig. 1 is a schematic structural view of the appearance of the electric operating mechanism of the present invention;

FIG. 2 is a schematic view of the combination of the safety lock assembly and the cover plate assembly of the present invention;

FIG. 3 is a top view schematic of the combination of the safety lock assembly and the cover plate assembly of FIG. 2;

fig. 4 is a schematic structural diagram of the driving member of the present invention;

FIG. 5 is a schematic view of the assembly structure of the safety slide block and the middle partition plate of the present invention;

fig. 6 is a schematic structural view of the safety slide block of the present invention;

FIG. 7 is a schematic view of the sectional structure of the safety slide and the middle partition plate of the present invention;

fig. 8 is a first schematic structural diagram of the cover plate assembly of the present invention;

fig. 9 is a schematic structural diagram ii of the cover plate assembly of the present invention;

fig. 10 is a first schematic view of an assembly structure of the cover plate assembly and the panel according to the present invention;

FIG. 11 is a schematic view of a second assembly structure of the cover plate assembly and the panel according to the present invention;

FIG. 12 is an enlarged schematic view of portion C of FIG. 11;

fig. 13 is a schematic structural view of the panel of the present invention;

FIG. 14 is an enlarged schematic view of the portion D in FIG. 13;

fig. 15 is a schematic view of the assembly structure of the protective cover assembly and the panel according to the present invention;

fig. 16 is a schematic sectional view of the assembly of the protective cover assembly and the panel according to the present invention;

fig. 17 is a schematic structural view of the protective cover assembly of the present invention;

fig. 18 is an enlarged schematic view of the panel portion of the present invention;

fig. 19 is a first schematic structural diagram (collection microswitch) of the collection assembly of the present invention;

fig. 20 is a schematic structural diagram of the second collecting assembly (photoelectric sensor) of the present invention;

fig. 21 is a first schematic structural diagram of a disc according to the present invention;

fig. 22 is a second structural schematic diagram of the disc of the present invention;

fig. 23 is a schematic view of an assembly structure of the test button pressing structure and the mounting seat according to the present invention;

FIG. 24 is an enlarged schematic view of section E of FIG. 23;

FIG. 25 is a first schematic view of the auxiliary pressing rod according to the present invention;

FIG. 26 is a second schematic structural view of the auxiliary pressing rod of the present invention;

FIG. 27 is a schematic view of the position structure of the reduction box of the present invention;

fig. 28 is an enlarged schematic view of portion F of fig. 27;

fig. 29 is a schematic view of the cam assembly of the present invention;

fig. 30 is a first schematic view of an assembly structure of the slider assembly of the present invention;

fig. 31 is a schematic view of an assembly structure of the slider assembly of the present invention;

fig. 32 is a schematic structural view of the driving slider of the present invention;

fig. 33 is a schematic view of an assembly structure of the driving member and the mounting plate according to the present invention.

In the figure: 1. a housing; 4. a first microswitch; 12. a mounting seat; 14. a reduction gearbox;

2. a safety lock assembly; 21. a lock cylinder; 22. a drive member; 23. a safety slide block; 24. an L-shaped limiting plate; 221. a first sleeve; 222. a drive block; 223. a limiting block; 224. a blocking step; 231. a limiting groove; 232. a return spring; 233. a contact portion; 234. a slide block mounting groove; 235. a connecting end; 236. A touch end;

3. a cover plate assembly; 31. a cover plate; 32. a touch block; 33. column shifting; 311. fastening in place; 312. a first waist hole; 313. a fifth bevel; 314. a second waist hole; 321. a third inclined plane; 331. a second lock hole; 332. a second inclined plane;

5. a middle partition plate; 51. a slider stopper;

6. a panel; 61. a cover plate chute; 62. a clamping groove for opening the door in place; 63. a positioning column; 64. a first lock hole; 65. a first inclined plane; 66. a door closing in-place clamping groove; 611. a fourth slope;

7. a protective flip cover assembly; 71. a first flip plate; 72. a second flip plate; 73. a rotating shaft; 74. an indication window; 75. rotating the hole; 76. a panel extension end; 77. a wedge block; 78. mounting holes; 711. a cover plate mounting groove; 712. a third lock hole; 721. a semicircular bulge; 722. a rebound groove; 731. a first mounting ramp; 761. and a fourth lock hole.

8. A pressing assembly; 81. pressing the auxiliary rod; 82. positioning a groove; 83. limiting the extending end; 84. a limiting end; 811. positioning a rod; 812. a connecting rod; 813. a pressing lever; 814. a limiting step; 815. a pressing part; 816. a limiting part; 817. blind holes; 841. a second mounting ramp.

9. A collection assembly; 92. a disc; 93. a triggered member; 94. a perspective window; 95. a key hole; 921. A dish surface; 922. a working part; 923. a notch; 924. a second sleeve; 925. reinforcing ribs; 926. driving the step; 927. positioning a step; 928. a collection tank; 931. a first acquisition microswitch; 932. a second acquisition microswitch; 933. a photosensor;

10. a circuit board; 101. a wiring terminal;

11. mounting a plate; 111. a sector hole; 112. driving the positioning plate;

13. a drive shaft; 131. a one-way slot;

15. a cam assembly; 151. a cam; 152. a drive rod; 153. a roller;

16. a slider assembly; 161. a guide bar; 162. driving the slide block; 163. a handle aperture; 164. a slider drive slot; 165. a blocking portion; 166. an arc-shaped surface; 167. a guide slope.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

As shown in figures 1-3, an electric operating mechanism for a circuit breaker comprises a housing 1, a mounting seat 12 arranged at the bottom of the housing 1, a middle partition 5 and a mounting plate 11 arranged at the middle of the housing 1, a panel 6 arranged at the top of the housing 1, a motor arranged on the middle partition 5, a reduction box driven by the motor, a driving shaft 13 driven by the reduction box 14, a cam assembly 15 arranged at the bottom of the driving shaft 13, a slider assembly 16 arranged on the mounting plate 11, a first micro switch 4 for closing remote control and a circuit board 10 for receiving and sending a control signal, wherein the cam assembly 15 drives the slider assembly 16 to reciprocate, an operating hole is arranged on the panel 6, a cover plate assembly 3 for covering the operating hole is arranged on the operating hole, a safety lock assembly 2 is arranged on the middle partition 5, and a protective flip cover assembly 7 for covering a wiring terminal 101 on the circuit board 10, The circuit breaker pressure testing device comprises a collecting assembly 9 for collecting the working state of the circuit breaker and a pressing assembly 8 for pressing a pressure testing button of the circuit breaker; the safety lock assembly 2 acts to touch the first microswitch 4, the cover plate assembly 3 acts to touch the first microswitch 4, and the safety lock assembly 2 and the cover plate assembly 3 can be independently operated to touch the first microswitch 4; when the safety lock assembly 2 is locked, the safety lock assembly 2 touches the first microswitch 4 to close the remote control, and the cover plate assembly 2 cannot be opened, so that the first microswitch 4 cannot be operated, and the driving shaft 13 cannot be operated, and the main purpose here is to limit the cover plate assembly 3 through the safety lock assembly 2 to prevent local control; when the cover plate assembly 2 is opened, the cover plate assembly 2 touches the first microswitch 4 to close remote control, the safety lock assembly 2 cannot be locked and cannot operate the first microswitch 4, the safety lock assembly 2 mainly aims to prevent the remote end from being operated, and when manual operation is carried out, the cover plate assembly 3 controls the first microswitch 4, and at the moment, the safety lock assembly 2 does not need to be controlled, so that the limiting operation is carried out; the closing of the remote control can be realized by powering off the motor or by prohibiting the circuit board from sending a driving signal.

As shown in fig. 2 and 3, the safety lock assembly 2 includes a lock cylinder 21 rotatable by a key, a driving member 22 fixed on the lock cylinder 21 and rotatable with the rotation of the lock cylinder 21, and a safety slider 23 disposed between the driving member 22 and the first microswitch 4, wherein a contact portion 233 contacting the driving member 22 is disposed on a side of the safety slider 23 close to the driving member 22, and the contact portion 233 extends to an initial position of the driving member 22 and contacts the driving member 22; the lock cylinder 21 rotates to drive the driving member 22 to rotate, the driving member 22 starts to push the contact portion 233 from the initial position so that the safety slider 23 moves forward to the working state and contacts with the first microswitch 4, and since the driving member 22 contacts with the contact portion 233 of the safety slider 23 at the initial position, when the lock cylinder 21 is rotated, the safety slider 23 can be pushed forward by overcoming corresponding resistance.

As shown in fig. 2 and 6, the contact portion 233 is close to the side of the safety slider 23, i.e., close to the surface a of the safety slider 23, an arc is disposed on the side of the contact portion 233 close to the middle of the safety slider 23, i.e., the surface B away from the surface a of the safety slider, the surface B is an arc, and the radius of the arc is greater than or equal to the rotation radius of the contact point of the contact portion 233 and the driving member 22, and in this scheme, the radius is selected to be equal to or slightly greater than; when equal to the selection, the driving member 22 completes the operation of pushing the safety slide 23 when entering the arc shape from the top end of the contact portion 233; when slightly larger than this is selected, the drive element 22 is in the process of pushing the safety slide 23 from the initial position to the working position.

As shown in fig. 4, the driving member 22 includes a first sleeve 221 fixed on the lock cylinder 21, a driving block 222 extending outward from a cylindrical surface of the first sleeve 221 in a radial direction, and a limiting block 223, the driving block 222 rotates with the lock cylinder 21 and pushes the safety slider 23 to move to a position close to the first microswitch 4 until contacting with the first microswitch 4, and the limiting block 223 also rotates with the rotation of the lock cylinder 21 and is mainly used for limiting the slider assembly 16 from performing a closing movement; the limiting block 223 and the slider assembly 16 are limited mutually, when the lock cylinder 21 is in a locking state, the driving block 22 pushes the safety slider 23 to touch the first microswitch 4, the limiting block 223 rotates to a moving path of the slider assembly 16, so that the slider assembly 16 cannot close the handle of the circuit breaker, and when the slider assembly 16 is in a closing state, the slider assembly 16 is located on the moving path of the limiting block 223 to limit the movement of the slider assembly.

As shown in fig. 33, the driving member 22 passes through the mounting plate 11, the mounting plate 11 is provided with a sector hole 111, the first sleeve 221 and the limiting block 223 are located in the sector hole 111 and rotate in the sector hole 111, meanwhile, the limiting block 223 is provided with a blocking step 224, when the first sleeve 221 moves to the edge of the sector hole 111 along with the lock cylinder 21, the blocking step 224 is matched with the sector hole 111 to block the lock cylinder 21 from continuing to rotate, at this time, the limiting block 223 is located on the moving path of the slider assembly 16, when the slider assembly 16 continues to move, the lock cylinder 21 cannot continue to rotate due to the action of the sector hole 111 and the blocking step 224, and it is ensured that the safety lock assembly 2 cannot be damaged due to an excessively large rotating angle.

As shown in fig. 5 and 7, the safety slide block 23 is mounted on the intermediate partition 5, the L-shaped position limiting plate 24 is oppositely arranged on the intermediate partition 5, the legs of the L-shaped position limiting plate 24 are oppositely arranged and form a slide block sliding groove with the intermediate partition 5, and the safety slide block 23 is mounted in the slide block sliding groove; the middle partition plate 5 extends out of the slide block limiting block 51 towards the L-shaped limiting plate 24, the safety slide block 23 is provided with a limiting groove 231, the slide block limiting block 51 is inserted into the limiting groove 231, a return spring 232 is arranged in the limiting groove 231, one end of the return spring 232 abuts against the end part of the limiting groove 231, and the other end of the return spring abuts against the slide block limiting block 51; when the safety slider 23 approaches to and touches the first microswitch 4, the return spring 232 is compressed, and after the safety slider 23 finishes working and the lock cylinder 21 is released, the return spring 232 rebounds and resets to enable the safety slider 23 to return to the initial position and not touch the first microswitch 4 any more, so that the first microswitch 4 is disconnected. Since the safety slider 23 is installed below the middle partition 5 and the first micro switch 4 is disposed above the middle partition 5, as shown in fig. 6, a touch block for contacting with the first micro switch 4 is disposed on the safety slider 23, the touch block includes a connection end 235 extending upward from the safety slider 23 and a touch end 236 extending from the top of the connection end 235 toward the first micro switch 4, and the connection end 235 penetrates through the middle partition 5.

Simultaneously for safety slide 23's simple to operate, slider mounting groove 234 has all been seted up in safety slide 23 both sides, slider mounting groove 234's width is greater than L type limiting plate 24 width, when the installation, L type limiting plate 24 pass behind slider mounting groove 234 to first micro-gap switch 4 direction slide can, later spacing safety slide 23 has been carried out behind installation lock cylinder 21 and driving piece 22, make slider mounting groove 234 and L type limiting plate 24 can not align at safety slide 23 during operation safety slide 23 promptly safety slide 23 can not break away from the slider spout.

As shown in fig. 2, 3, 8 and 9, the cover plate assembly includes a cover plate 31 for covering the operation hole, a cover plate sliding slot 61 disposed on the lower surface of the panel 6, and a shifting post 33 for driving the cover plate 31 to slide in the cover plate sliding slot 61, and the shifting post 33 is manually pushed to make the cover plate 31 slide in the cover plate sliding slot 61 so as to realize the function of opening and closing the operation hole; the cover plate 31 is provided with at least one strip-shaped first waist hole 312 at a position close to the cover plate sliding groove 61 side, the first waist holes 312 can be arranged at one side or two sides of the cover plate 31 according to requirements, two L-shaped limiting blocks extend downwards from the lower surface of the panel 6, the width of each L-shaped limiting block is far less than the length of the corresponding first waist hole 312, the legs of the two L-shaped limiting blocks are oppositely arranged, and the cover plate sliding groove 61 is formed by the two L-shaped limiting blocks and the lower surface of the panel 6; a fourth inclined surface 611 (shown in fig. 12) is arranged on the bottom surface of the foot of the L-shaped limiting block, the fourth inclined surface 611 is matched with the first waist hole 312, and the surface of the fourth inclined surface 611 faces the position of the first waist hole 312; when the cover plate 31 is clamped into the cover plate sliding groove 61, the fourth inclined surface 611 forces the side edge of the first waist hole 312 to deform inward until the cover plate 31 enters the cover plate sliding groove 61 to complete installation; for easier installation, a fifth inclined surface 313 is provided on the cover plate 31, the fifth inclined surface 313 is provided beside the first waist hole 312, the fourth inclined surface 611 is matched with the fifth inclined surface 312, and the surface of the fourth inclined surface 611 is opposite to the surface of the fifth inclined surface 312 and is in contact with the surface during operation.

As shown in fig. 10 and 11, in order to keep the cover plate 31 at the open or close position when the operation hole is opened or closed, an in-place buckle 311 is arranged on the cover plate 31, an in-place slot is arranged beside the cover plate sliding groove 61, and the in-place buckle 311 is matched with the in-place slot to close and open and position the cover plate 31; two in-place clamping grooves are provided, one clamping groove 62 for opening the door in place and the other clamping groove 66 for closing the door in place; when the door is in an open state, the in-place buckle 311 is matched with the door opening in-place clamping groove 62, and when the door is in a closed state, the in-place buckle 311 is matched with the door closing in-place clamping groove 66; meanwhile, in order to ensure that the in-place buckle 311 has certain elasticity, the strip-shaped second waist hole 314 is formed in the cover plate 31 beside the in-place buckle 311, when the in-place buckle 311 enters or leaves the in-place clamping groove, the in-place buckle 311 is forced to deform towards the direction of the second waist hole 314, and when the in-place buckle 311 completely enters or leaves the in-place clamping groove, the in-place buckle 311 resets.

In order to improve the safety performance of the electric operating mechanism 1 as shown in fig. 8 and 9, it is necessary to ensure that the electric control cannot be performed at the remote end when the electric operating mechanism is manually operated at the local end, so that the cover plate 31 is provided with the touch block 32 for touching the first microswitch 4 to operate, and the touch block 32 is provided with the third slope 321 which is engaged with the first microswitch 4, and the third slope 321 contacts and presses the first microswitch 4 from the side surface of the first microswitch 4, so that the contact point of the first microswitch 4 can be protected, and the risk of damage can be reduced.

As shown in fig. 10, the poking column 33 is mainly used for poking the cover plate 31 to slide, the poking column 33 extends upwards from the cover plate 31 and passes through the operation hole, after the cover plate 31 is clamped in the cover plate sliding groove 61, the poking column 33 moves from one end to the other end in the operation hole, the cover plate 31 cannot be separated from the cover plate sliding groove 61, and the poking column 33 also has a limiting function.

As shown in fig. 13 and 14, a positioning post 63 is disposed on the front panel 6, a first locking hole 64 is disposed on the positioning post 63, a second locking hole 331 is disposed on the dial post 33, when the cover plate 31 covers the operating hole, the dial post 33 abuts against the positioning post 63, and the first locking hole 64 is aligned with the second locking hole 331 and locked by lead sealing; a first inclined surface 65 is arranged on one side of the positioning column 53 close to the shifting column 33, a second inclined surface 332 is arranged on one side of the shifting column 33 close to the positioning column 63, when the positioning column 63 and the shifting column 33 are locked through lead sealing, the second inclined surface 332 is attached to the first inclined surface 65, the second inclined surface 332 is positioned above the first inclined surface 65, when the cover plate 31 is designed, the cover plate sliding groove 61 can only be arranged on the left side due to the narrow inner space, the cover plate 31 slides towards the left side to be opened, and at the moment, most of the cover plate 31 is arranged in the cover plate sliding groove 61, and the cover plate 31 is stable; when the cover plate 31 is covered by sliding to the right side, the right side of the cover plate 31 is suspended, and the suspension problem is well solved through the matching of the first inclined surface 65 and the second inclined surface 332, so that the cover plate 31 can slide more smoothly.

As shown in fig. 15 to 18, the protective cover member is provided with a first cover plate 71 on the panel 6, rotation shafts 73 provided on both sides of the first cover plate 71, and rotation holes 75 provided on the panel 6 and engaged with the rotation shafts 73; at least one mounting hole 78 on the panel 6 is arranged below the first flip plate 71, so that the rusting of screws in the mounting hole 78 can be prevented, and the protection grade is improved; the rotating shafts 73 on both sides are inserted into the rotating holes 75 respectively, so that the first flip cover 71 rotates along with the rotating shafts 73, and only the wiring port of the wiring terminal 101 is exposed to the outside when the whole protective flip cover assembly 7 is in a closed state, thereby preventing dust from entering the inside.

In a general working state, the structure cannot be opened, and in order to ensure safety, a first lock piece is arranged on the first flip plate 71, a second lock piece is arranged on the panel 6, the first lock piece is matched with the second lock piece and locked through lead sealing, the matching form of the first lock piece and the second lock piece is more, in the scheme, the first lock piece is a third lock hole 712 arranged on the first flip plate 71, the second lock piece is a panel extending end 76 arranged on the panel 6, a fourth lock hole 761 is arranged on the panel extending end 76, the panel extending end 76 passes through the third lock hole 712, and the fourth lock hole 761 is provided with lead sealing or a padlock.

In terms of installation, a cover plate installation groove 711 with an opening at one end is arranged at the position of the first flip plate 71 close to the rotating shaft 73, the cover plate installation groove 711 is perpendicular to the axial direction of the rotating shaft 73, and the rotating shafts 73 at two sides of the first flip plate 71 are bosses extending towards two sides; the cover plate mounting groove 711 can be arranged on one side or two sides, and the two sides are selected in the scheme; during installation, the two sides of the first flip plate 71 are manually pressed inwards, so that the rotating shafts 73 on the two sides move inwards until the distance between the rotating shafts 73 on the two sides is smaller than the distance between the rotating holes 75 on the two sides, the rotating shafts 73 are inserted into the rotating holes 75, the hands are loosened, and the two sides of the first flip plate 71 rebound to the initial positions to complete installation; when the material used is hard and the strength of hand is not sufficient, the first installation inclined surface 731 is provided on the end surface of the rotating shaft 73, and the rotating shaft 73 is pushed into the rotating hole 75 through the first installation inclined surface 731 to complete installation.

In the closed state, if the operator forgets to lock the protective cover after the operation is completed, the protective cover structure 7 is easily opened, such as by wind or vibration; therefore, the second flip plate 7 extending downwards from the end part of the first flip plate 71 is provided with a first in-position locking piece at the inner side of the second flip plate 72, and a second in-position locking piece is arranged on the shell 1 and matched with the first in-position locking piece; the first in-place locking piece is a semicircular bulge 721, the second in-place locking piece is a wedge-shaped block 77, in the process from opening to closing, the first in-place locking piece is firstly contacted with the inclined surface of the wedge-shaped block 77, and after the first in-place locking piece is pressed down forcibly, the first in-place locking piece crosses the wedge-shaped block 77 and is positioned below the wedge-shaped block 77; in the process from closing to opening, the first in-place locking piece is firstly contacted with the right-angled edge of the wedge-shaped block 77, so that the force used in the opening process is greater than that used in the closing process, and the protection is better performed; since the second flip plate 72 needs to rotate at a small angle relative to the first flip plate 71 during the opening process and the closing process, in order to reduce the risk of fracture, a resilient slot 722 is formed on the first flip plate 71 and close to the second flip plate 72; meanwhile, in order to facilitate operation and indicate the position of manual operation, an inward spherical surface is arranged on the second flip plate 72, the second flip plate 72 can be opened conveniently and the operation position of the fixing hole of the wiring terminal 101 can be enlarged, and the operation can be performed from the front side and the side, so that the use in a narrow space is facilitated.

An indication window 74 is arranged on the first flip plate 71, the indication window 74 is used for observing the working state of the electric operating mechanism 1, the indication window 74 rotates along with the first flip plate 71 to achieve the purpose of opening, and after the indication window is opened, the inner surface of the indication window 74 can be cleaned and the wiring operation can be carried out.

As shown in fig. 19 and 20, the collecting assembly includes a triggering member disposed on the driving shaft 13 and triggered members 93 disposed on a middle partition plate beside the driving shaft 13, at least two triggered members 93 may be disposed as required, the triggering member rotates around a central line of the driving shaft 13 and sequentially triggers each triggered member 93, each triggered member 93 respectively collects different working states of the circuit breaker or at least two triggered members 93 cooperate to collect different working states, in a design process, different working states of the circuit breaker may be displayed by touching different triggered members 93, each triggered member 93 represents one working state, or one working state may be represented by cooperation between two, three, or more triggered members 93.

The triggered element 93 may be a collecting microswitch or a photosensor 933, and the use and triggering principles of the two are basically the same, so the triggered element 93 is mainly used as the collecting microswitch in the following description.

The trigger part has various shapes and can be a cam, when the cam rotates around the central line of the driving shaft 13, the cam is sequentially contacted with each acquisition microswitch, and the acquisition of working states such as brake opening, brake closing, tripping and the like is realized; the trigger piece can also be a disc 92 of a notch 923 on one side, each acquisition microswitch is in contact with the disc 92, when the disc 92 rotates around the central line of the driving shaft 13, the notches 923 sequentially rotate to the positions of the acquisition microswitches to enable the acquisition microswitches to be released from contact, namely the acquisition microswitches are switched on and off, so that the acquisition of the working state is realized; the shape of the micro-switch is not limited to the shape, and the main purpose is to collect working state signals through the processes of collecting the micro-switch from closing to opening and from opening to closing; when the triggered piece 93 is a photoelectric sensor 933, the light of the photoelectric sensor 933 is shielded by a cam or a disc 92 to collect signals, and when the disc 92 is used, a collecting groove 928 is arranged on the disc 92 to realize the same functions of collecting the micro switch from closing to opening and from opening to closing.

Adopt and gather micro-gap switch main objective and present the different operating condition of circuit breaker at remote end, and set up different colour signs through setting up on the trigger piece at local end to the operating condition at the circuit breaker presents to the maintainer through different colour signs from indicating window 4 in.

Based on the above structure, as shown in fig. 21 and 22, the trigger is in the form of a circular disk structure, and includes a disk surface 921 for indication, a working portion 922 extending downward from the bottom of the disk surface 921, and a key hole 95 formed in the middle of the disk surface 921, a notch 923 is provided on the working portion 922, a second sleeve 924 is formed downward from the bottom of the disk surface 921 at the key hole 95, the working portion 922 is in a ring shape, and a plurality of reinforcing ribs 925 are provided in a cavity between the working portion 922 and the second sleeve 924; the second sleeve 924 is sleeved on the driving shaft 13; a driving step 926 for driving the driving shaft 13 to rotate is provided inside the second sleeve 924; a positioning step 927 extends upwards from the top of the disk surface 921, the key hole 95 is arranged on the positioning step 927, and the positioning step 927 is matched with the panel 6 and used for positioning and limiting the position of the driving shaft 13; the plate 921, the working portion 922, the second sleeve 924, the ribs 925, the drive step 926, and the positioning step 927 are integrally formed as a plastic piece.

The breaker only needs to distinguish the opening, closing or tripping states at present, so the acquisition micro-switches in the scheme have two acquisition micro-switches which are respectively a first acquisition micro-switch 931 and a second acquisition micro-switch 932, the first acquisition micro-switch 931 is closed and the second acquisition micro-switch 932 is opened to acquire opening signals, the first acquisition micro-switch 931 is opened and the second acquisition micro-switch 932 is closed to acquire closing signals, and the first acquisition micro-switch 931 and the second acquisition micro-switch 932 are both closed to acquire tripping signals; if the trigger is in the form of a cam, both the first collecting microswitch 931 and the second collecting microswitch 932 are turned off to collect trip signals. The signal acquisition based on the first and second acquisition microswitches 931 and 932 adopts a binary system in the input signal, and the output is 1 when the acquisition microswitches are in the closed state and 0 when the acquisition microswitches are in the open state, which can be understood as acquiring the opening signal when the received signal is 10, acquiring the closing signal when the received signal is 01, and acquiring the tripping signal when the received signal is 00 or 11.

In order to facilitate reading at the local end, three color marks are arranged on the top surface of the disk surface 921, wherein red represents closing of the circuit breaker, green represents opening of the circuit breaker, and white represents tripping of the circuit breaker, the three color marks respectively represent opening, closing or tripping states of the circuit breaker through the indicating window 74, and the working state of the circuit breaker can be directly read at the local end when a line is overhauled, so that safety accidents are reduced.

As shown in fig. 23 to 26, the pressing assembly includes a pressing auxiliary rod 81 for pressing the test button of the circuit breaker, one end of the pressing auxiliary rod 81 is in contact with the test button of the circuit breaker, and the other end extends out of the panel 6, a through hole is formed in the panel 6, the pressing auxiliary rod 81 extends into the through hole, a positioning groove 82 is formed in the mounting base 12, the pressing auxiliary rod 81 is inserted into the positioning groove 82, a return spring is disposed between the positioning groove 82 and the pressing auxiliary rod 81 for returning the pressing auxiliary rod 81, and a limiting member is disposed on the positioning groove 82 for limiting the return position of the pressing auxiliary rod 81; when the test button needs to be pressed, an operator manually presses the pressing auxiliary rod 81 from the panel, the pressing auxiliary rod 81 transmits force to the test button and presses the test button, at the moment, the pressing auxiliary rod 81 compresses the return spring, then the pressing auxiliary rod 81 is released, the position of the limiting piece is rebounded through the return spring, and the pressing auxiliary rod 81 returns to the initial position; the bottom of the auxiliary pressing rod 81 is positioned through the positioning groove 82, so that the auxiliary pressing rod is not deviated, and the pressing accuracy is improved.

Because the inner space of the shell 1 is limited, when the structure is designed, the auxiliary pressing rod 81 needs to enter from the side and press, so that the auxiliary pressing rod 81 comprises a rod body and a pressing part 815 extending from the side of the rod body, the bottom of the rod body is inserted into the positioning groove 82, the bottom of the pressing part 815 contacts with the test button, and the rod body mainly plays a role in transmitting the force of manual pressing; the pressing portion 815 extends from the side to the upper side of the test button, and the auxiliary pressing rod 81 can be designed on the side of the electric operating mechanism 1 to give way to the internal transmission member.

The reset structure and the limiting piece can be designed by combining the structures of the pressing auxiliary rod 81 and the positioning groove 82, and can be in various forms, in the scheme, a blind hole 817 is inwards formed in the bottom of the rod body, and the reset spring is arranged in the blind hole 817; one end of the reset spring props against the bottom of the positioning groove 82, the other end of the reset spring props against the bottom of the blind hole 817, the blind hole 817 positions the reset spring at the bottom of the rod body, the shape of the bottom of the rod body is consistent with that of the positioning groove 82, and the shape of the bottom of the rod body is slightly smaller than that of the positioning groove 82, so that the rod body can only move up and down in the positioning groove 82 to; meanwhile, the limiting member comprises a limiting extending end 83 which is arranged beside the positioning groove 82 and extends upwards, and a limiting end 84 which is arranged at the top of the limiting extending end 83, is perpendicular to the limiting extending end 83 and extends towards the rod body, and a limiting step 814 matched with the limiting end 84 is arranged on the rod body; a second installation inclined plane 841 is arranged on the limiting end 84, and when the rod body is inserted into the installation groove 82 through the second installation inclined plane 841, the limiting extending end 83 deforms and rebounds after entering; the combination of the limiting extending end 83 and the limiting end 84 is a snap structure, which is directly integrated with the mounting seat 9, so that the forming mode is simple, and the cost is saved.

In the use, when the circuit breaker is in the separating brake state, need not carry out the electric leakage test, the event can not operate test button when the separating brake state, the event stretches out a spacing portion 816 from body of rod side, produce between spacing portion 816 and the electrical operation mechanism 1's the slider subassembly 16 and interfere, spacing portion 816 is located slider subassembly 16's top, when slider subassembly 16's position is in the separating brake operating condition, when pressing down and pressing down auxiliary rod 81, spacing portion 816 can contact with the slider upper surface, thereby block to press down auxiliary rod 81 and continue downstream, guarantee can not operate test button under the separating brake state.

Further in order to ensure the stability of the pressing auxiliary rod 81 and reduce the weight thereof, the rod body comprises a positioning rod 811 positioned at the bottom, a connecting rod 812 positioned in the middle and a pressing rod 813 positioned at the top, the cross section of the positioning rod 811 is larger than that of the connecting rod 812, the cross section of the connecting rod 812 is larger than that of the pressing rod 813, and a limit step 814 is formed at the connection position of the positioning rod 811 and the connecting rod 812; the connecting rod 812 and the pressing rod 813 are provided with lightening grooves or lightening holes.

As shown in fig. 3, 27 and 28, the reduction gearbox 14 is arranged on the mounting plate 11 and connected with the output shaft of the motor and the driving shaft 13 of the electric operating mechanism, and outputs the output to the driving shaft 13 through a plurality of gear sets combined into a gear set, meanwhile, the mounting plate 11 is provided with a driving positioning plate 112 and a through hole is arranged on the driving positioning plate 111, the driving shaft 13 is arranged in the through hole, the inner wall of the through hole is provided with two inward concave one-way grooves 131, one side of each one-way groove 131 is an arc surface and is in smooth transition with the inner wall of the through hole, the other side of each one-way groove 131 is a vertical surface in the radial direction, and the cylindrical surface of the driving shaft 13 is provided with an; when the driving shaft 13 rotates clockwise and the driving pin moves over the vertical plane, the driving pin is inserted into the one-way groove 131 due to elasticity and moves along the arc surface, the arc surface slowly presses the driving pin back to the original position until the driving pin is separated from the one-way groove 131, and when the driving pin rotates to the vertical plane again, the action is continued; if the driving pin moves anticlockwise, the driving pin enters from the arc surface, the driving pin is slowly released, and the driving pin cannot move continuously until the driving pin moves to a vertical plane, so that the driving shaft 13 can only move towards one direction.

As shown in fig. 29, the cam assembly 15 is disposed at the end of the driving shaft 13, and includes an eccentric wheel 151 and a driving rod 152 disposed on the eccentric wheel 151, and a roller 153 is disposed on the driving rod 152, and the driving rod 152 drives the roller 153 to rotate around the center of the driving shaft 13, and the rotation track of the driving rod 152 is circular; the eccentric wheel 151 may be a straight rod, so that the motion track of the driving rod 152 is circular; and the roller 153 pushes the slider assembly 16 to reciprocate.

The mounting plate 11 is provided in a U-shape, and as shown in fig. 30, 31 and 32, the slider assembly 16 includes two guide rods 161 arranged parallel to each other between two extending ends of the mounting plate 11, and a driving slider 162 arranged across the two guide rods 161, wherein the driving slider 162 can slide along the two guide rods 161; the driving slider 161 is provided with a handle hole 163, a handle of the circuit breaker is inserted into the handle hole 163, and when the driving slider 162 reciprocates along the guide rod 161, the handle of the circuit breaker is driven to realize the switching-on and switching-off operations of the circuit breaker. A slide block driving groove 164 is formed in the driving slide block 162, the roller 153 in the cam assembly 15 is arranged in the slide block driving groove 164, the slide block driving groove 164 is perpendicular to the guide rod 161, the roller 153 performs circular motion and pushes the driving slide block 162 to reciprocate on the guide rod 161 through two side walls of the slide block driving groove 164, meanwhile, the roller 153 reciprocates in the slide block driving groove 164, and rolling friction is realized through the contact of the self-rotation of the roller 153 and the side walls of the slide block driving groove 164; meanwhile, an arc-shaped surface 166 is arranged in the slider driving groove 164 to be combined with a guide inclined surface 167, when the driving slider 162 moves to the maximum position of the opening, the roller 153 enters the arc-shaped surface 166, and when the driving slider 162 returns, the rebound speed of the handle can be blocked and slowed down by the guide inclined surface 167, so that damage to corresponding parts due to too fast rebound is prevented. Meanwhile, a blocking portion 165 is arranged on the driving slider 162, the blocking portion 165 is used in cooperation with a limiting block 223 of the safety lock assembly 2, when the safety lock assembly 2 is locked, the limiting block 223 rotates to a moving path of the driving slider 162, the blocking portion 165 cannot move to a switching-on position due to the limiting block 223, when the circuit breaker is in the switching-on position, the blocking portion 165 on the driving slider 162 moves to the rotating path of the limiting block 223, and the limiting block 223 cannot rotate to a specified position due to the blocking portion 165, so that the safety lock assembly 2 cannot achieve a locking function.

It is to be emphasized that: the above embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form, and any simple modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments are all within the scope of the technical solution of the present invention.

Claims (10)

1. An electric operating mechanism for a circuit breaker comprises a shell (1), a mounting seat (12) arranged at the bottom of the shell (1), a middle partition plate (5) and a mounting plate (11) arranged at the middle part of the shell (1), a panel (6) arranged at the top of the shell (1), a motor arranged on the middle partition plate (5), a reduction box (14) driven by the motor, a driving shaft (13) driven by the reduction box (14), a cam component (15) arranged at the bottom of the driving shaft, a slider component (16) arranged on the mounting plate (11), a first microswitch (4) used for closing remote control and a circuit board (10) used for receiving and sending a control signal, wherein the cam component (15) drives the slider component (16) to reciprocate, an operating hole is formed in the panel (6), and a cover plate component (3) used for covering the operating hole is arranged in the operating hole, the safety lock assembly (2) is arranged on the middle partition plate (5), and is characterized by further comprising a protective flip cover assembly (7) used for covering a wiring terminal (101) on a circuit board (10), a collection assembly (9) used for collecting the working state of the circuit breaker, and a pressing assembly (8) used for pressing a pressure test button of the circuit breaker, wherein the safety lock assembly (2) acts to touch the first microswitch (4) to close remote control, the cover plate assembly (3) acts to touch the first microswitch (4) to close remote control, and the safety lock assembly (2) and the cover plate assembly (3) are mutually limited; when the safety lock assembly (2) is locked, the cover plate assembly (3) cannot be opened and the first microswitch (4) cannot be operated at the same time; when the cover plate component (3) is opened, the safety lock component (2) cannot be locked and the first microswitch (4) cannot be operated at the same time.

2. The electric operating mechanism for the circuit breaker according to claim 1, wherein the safety lock assembly (2) comprises a lock cylinder (21) which can be rotated by a key, a driving member (22) which is fixed on the lock cylinder (21) and rotates along with the rotation of the lock cylinder (21), and a safety slide block (23) which is arranged between the driving member (22) and the first microswitch (4), a contact part (233) which is contacted with the driving member (22) is arranged on one side of the safety slide block (23) close to the driving member (22), and the contact part (233) extends to the initial position of the driving member (22) and is contacted with the driving member (22); the lock cylinder (21) rotates to drive the driving part (22) to rotate, and the driving part (22) starts to push the contact part (233) from the initial position so that the safety slide block (23) moves forwards to a working state and is in contact with the first microswitch (4); the contact part (233) is close to the side edge of the safety slide block (23), and one side of the contact part (233) close to the middle position of the safety slide block (23) is provided with an arc.

3. The electric operating mechanism for the circuit breaker according to claim 2, wherein the driving member (22) comprises a first sleeve (221) fixed on the lock cylinder (21), a driving block (222) extending outward from the cylindrical surface of the first sleeve (221) in the radial direction, and a limit block (223), the driving block (222) contacts with the contact portion (233) and pushes the safety slider (23) to move, and the limit block (223) limits the closing movement of the slider assembly (16); the limiting block (223) and the sliding block component (16) are limited mutually.

4. The electric operating mechanism for the circuit breaker according to claim 1, wherein the cover assembly comprises a cover plate (31) for covering the operating hole, a cover plate sliding slot (61) disposed on the lower surface of the panel (6), a toggle column (33) for driving the cover plate (31) to slide in the cover plate sliding slot (61), and a touch block (32) for touching the first microswitch (4), a first elongated waist hole (312) is disposed at a position of the cover plate (31) near the cover plate sliding slot (61), at least one of the first waist holes (312) is provided with two L-shaped stoppers downwardly extending from the lower surface of the panel (6), the legs of the two L-shaped stoppers are disposed opposite to each other, and the cover plate sliding slot (61) is formed by the two L-shaped stoppers and the lower surface of the panel (6); a fourth inclined surface (611) is arranged on the sole surface of the L-shaped limiting block, and the fourth inclined surface (611) is matched with the first waist hole (312); when the cover plate (31) is clamped into the cover plate sliding groove (61), the fourth inclined surface (611) forces the edge of the first waist hole (312) to deform inwards until the cover plate (31) enters the cover plate sliding groove (61); the cover plate (31) is provided with an in-place buckle (311), an in-place clamping groove is arranged beside the cover plate sliding groove (61), and the in-place buckle (311) is matched with the in-place clamping groove to close and open the cover plate (31) for positioning.

5. The electric operating mechanism for the circuit breaker according to claim 4, wherein a positioning post (63) is disposed on the front panel (6), a first locking hole (64) is disposed on the positioning post (63), a second locking hole (331) is disposed on the dial post (33), when the cover plate (31) covers the operating hole, the dial post (33) abuts against the positioning post (63), and the first locking hole (64) is aligned with the second locking hole (331) and locked by lead sealing.

6. The electrical operating mechanism for the circuit breaker according to claim 1, wherein the protective cover-flip assembly (7) comprises a first cover-flip plate (71) disposed on the panel (6), a second cover-flip plate (72) extending downward from the end of the first cover-flip plate (71), a rotating shaft (73) disposed on both sides of the first cover-flip plate (71), and a rotating hole (75) disposed on the panel (6) and engaged with the rotating shaft (73); at least one mounting hole (78) on the panel (6) is arranged below the first flip plate (71); an indication window (74) is arranged on the first flip plate (71), and the indication window (74) is used for observing the working state; first flip board (71) on set up first latch fitting panel (6) on set up the second latch fitting, first latch fitting and second latch fitting cooperation and through the lead sealing locking.

7. The electric operating mechanism for the circuit breaker according to claim 1, characterized in that the collecting assembly (9) comprises a triggering member arranged on the driving shaft (13) and triggered members (93) arranged on the middle partition plate (5) beside the driving shaft (13), at least two triggered members (93) are arranged, the triggering member rotates to trigger the triggered members (93) to contact, and each triggered member (93) respectively collects different working states of the circuit breaker or at least two triggered members (93) are matched to collect different working states.

8. The electric operating mechanism for the circuit breaker according to claim 7, wherein the triggered element (93) has two parts, namely a first triggered element and a second triggered element, the first triggered element is closed and the second triggered element is opened to acquire the switching-off signal, the first triggered element is opened and the second triggered element is closed to acquire the switching-on signal, the first triggered element and the second triggered element are both closed or the first triggered element and the second triggered element are both opened to acquire the tripping signal.

9. The electric operating mechanism for the circuit breaker according to claim 1, wherein the pressing assembly (8) comprises a pressing auxiliary rod (81) for pressing the test button of the circuit breaker, one end of the pressing auxiliary rod (81) is in contact with the test button of the circuit breaker, the other end of the pressing auxiliary rod extends out of the panel (6), a through hole is formed in the panel (6), the pressing auxiliary rod (81) extends into the through hole, a positioning groove (82) is formed in the mounting seat (12), the pressing auxiliary rod (81) is inserted into the positioning groove (82), a return spring is arranged between the positioning groove (82) and the pressing auxiliary rod (81) for returning the pressing auxiliary rod (81), and a limiting member is arranged on the positioning groove (82) for limiting the return position of the pressing auxiliary rod (81).

10. The electric operating mechanism for the circuit breaker according to claim 9, wherein the pressing auxiliary rod (81) comprises a rod body and a pressing portion (815) extending from a side of the rod body, the bottom of the rod body is inserted into the positioning groove (82), and the bottom of the pressing portion (815) contacts the test button; a limiting part (816) extends out of the side of the rod body, and interference is generated between the limiting part (816) and the sliding block component (16).

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