WO2021196503A1

WO2021196503A1 - Electric operating mechanism for circuit breaker

Info

Publication number: WO2021196503A1
Application number: PCT/CN2020/110129
Authority: WO
Inventors: 楼铭达; 毛海锋; 楼峰
Original assignee: 苏州未来电器股份有限公司
Priority date: 2020-04-02
Filing date: 2020-08-20
Publication date: 2021-10-07

Abstract

The present invention relates to an electric operating mechanism for a circuit breaker. The electric operating mechanism comprises: a protective flip cover assembly, configured to cover a wiring terminal on a circuit board, an acquisition assembly, configured to acquire a working state of the circuit breaker, and a press assembly, configured to press a pressure test button of the circuit breaker. A safety lock assembly acts to touch a first microswitch to turn off remote control, a cover plate assembly acts to touch the first microswitch to turn off the remote control, and the safety lock assembly and the cover plate assembly are mutually limited. By using the structure, due to the interference between the safety lock assembly and the cover plate assembly, a drive shaft cannot be manually controlled to perform a closing operation during maintenance; a remote closing operation of a remote end is avoided by means of the control of the first microswitch; after the structure is in a locked state during maintenance, a remote electric operation and a local manual operation cannot be performed; and meanwhile, the overall safety level of the electric operating mechanism is improved by combining the acquisition of the working state of the circuit breaker with the protection of the wiring terminal and a mounting hole.

Description

Electric operating mechanism for circuit breaker

This application claims the priority of the invention patent application whose application date is April 02, 2020, the application number is 202010256648.0, and the invention title is "an electric operating mechanism for circuit breakers". The application date is April 15, 2020. The application The priority of the invention patent application with the number of 202020559719.X and the title of the invention is "cover plate assembly structure for electric operating mechanism", the entire content of which is incorporated into this application by reference.

Technical field

The present invention relates to the technical field of automatic circuit breaker control, in particular to an electric operating mechanism with higher safety.

Background technique

The circuit breaker is a switch device used to connect or disconnect the circuit, and the opening and closing operations of the circuit breaker can be manually controlled locally or remotely controlled by an electric operating mechanism, that is, automatic control is realized; At that time, the maintenance personnel need to open the circuit breaker to perform the maintenance work. In the maintenance work, the opening operation is usually performed manually. At this time, most of the circuit breaker handles are opened by turning the drive shaft of the key to achieve the circuit breaker. After operation, most electric operating mechanisms turn off the power of the motor by turning the safety lock and touching the micro switch, disconnecting the operation of the remote end, preventing the maintenance personnel from repairing the remote end of the circuit from closing operation; although the above method eliminates the control of the remote end, Because the drive shaft hole is in an open state, other maintenance personnel will perform the closing operation through the drive shaft, which will lead to safety accidents and irreparable losses for the personnel who are performing line maintenance. At the same time, the existing electric operating mechanism does not open the circuit. Collecting the working status of the device and protecting the wiring terminals.

Summary of the invention

The technical problem to be solved by the present invention is to provide an electric operating mechanism for a circuit breaker, which can cut off the control of the local end and the remote end during maintenance, and at the same time collect the working status and collect the protection connection terminals in the same mechanism.

The technical solution adopted by the present invention to solve its technical problem is: an electric operating mechanism for a circuit breaker, comprising a casing, a mounting seat arranged at the bottom of the casing, an intermediate partition plate and a mounting plate arranged in the middle of the casing, and a mounting plate arranged in the casing. The panel on the top of the body, the motor set on the intermediate partition plate, the gearbox driven by the motor, the drive shaft driven by the gearbox, the cam assembly set at the bottom of the drive shaft, the slider assembly set on the mounting plate, The first micro switch for remote control and the circuit board for receiving and sending control signals are turned off, the cam assembly drives the slider assembly to reciprocate, an operating hole is provided on the panel, and the operating hole is A cover plate assembly for covering the operating hole is provided, and a safety lock assembly is provided on the intermediate partition plate, which is characterized in that it also includes a protective flip cover assembly for covering the wiring terminals on the circuit board, and collection of the working state of the circuit breaker Component and a pressing component for pressing the circuit breaker test button, the safety lock component touches the first micro switch to close the remote control, and the cover plate component touches the first micro switch to close the remote control, The safety lock assembly and the cover plate assembly are mutually restricted; when the safety lock assembly is locked, the cover plate assembly cannot be opened and the first micro switch cannot be operated at the same time; when the cover plate assembly is opened, the safety The lock assembly cannot be locked and the first micro switch cannot be operated at the same time.

More specifically, the safety lock assembly includes a lock cylinder that can be rotated by a key, a driving member fixed on the lock cylinder and rotating with the rotation of the lock cylinder, and a safety slide set between the driving member and the first micro switch. Block, a contact part contacting the driving part is provided on the side of the safety sliding block close to the driving part, and the contact part extends to the initial position of the driving part and contacts the driving part; the lock cylinder rotates to drive the driving part The drive member rotates, and the driving member pushes the contact part from the initial position so that the safety slider moves forward to the working state and touches the first micro switch; the contact part is close to the side of the safety slider, and the contact part An arc is set on the side close to the middle position of the safety slider.

More specifically, the driving member includes a first sleeve fixed on the lock cylinder, a driving block and a limiting block protruding outward from the cylindrical surface of the first sleeve in the radial direction, and the driving block is connected to the The contact part contacts and pushes the safety sliding block to move, the limit block restricts the sliding block assembly to make the closing movement; the limit block and the sliding block assembly limit each other.

More specifically, the cover assembly includes a cover for covering the operation hole, a cover sliding groove provided on the lower surface of the panel, a shift post for driving the cover to slide in the cover sliding groove, and a handle for touching the The touch block of a micro switch is provided with a long first waist hole at a position of the cover plate close to the sliding groove side of the cover plate. At least one first waist hole is located from the lower surface of the panel Two L-shaped limit blocks protruding downward, the feet of the two L-shaped limit blocks are arranged opposite to each other, and the cover chute is formed by the two L-shaped limit blocks and the lower surface of the panel; The foot bottom surface of the L-shaped limit block is provided with a fourth inclined surface, and the fourth inclined surface is matched with the first waist hole; when the cover plate is locked into the cover plate sliding groove, the fourth inclined surface forces the side of the first waist hole Deform inwardly until the cover plate enters the cover plate chute; an in-position buckle is provided on the cover plate, and an in-position buckle is provided beside the cover plate chute, and the in-position buckle is matched with the in-position chute Position the closing and opening of the cover.

More specifically, a positioning column is provided on the panel, a first lock hole is provided on the positioning column, and a second lock hole is provided on the shifting column. When the cover plate covers the operating hole, the dial The column is close to the positioning column, and the first lock hole is aligned with the second lock hole and blocked by lead.

More specifically, the cover plate assembly includes a cover plate for covering the operation hole, a cover plate sliding groove provided on the panel or the cover plate, and a pushing part for driving the cover plate to slide in the cover plate sliding groove. The cover plate or the panel is provided with bumps, the bumps are matched with the cover slide grooves, a mounting resilient member is provided on the cover plate next to the bumps, and a positioning piece extends below the cover plate When the cover is in an open or closed state, the position of the cover is restricted by the in-position buckle assembly; the positioning end is provided with a contact part for contacting the micro switch .

More specifically, the contact portion includes a contact member and a driving waist hole provided on the contact member, the positioning end is inserted into the driving waist hole and slides in the driving waist hole, and the positioning end drives the contact member and Micro switch contact.

More specifically, the contact portion includes a contact piece and a stroke rebound groove provided on the contact piece. On both sides of the stroke rebound groove, stroke bosses protrude outward, and the positioning end is provided Stroke driving groove, the stroke boss cooperates with the stroke driving groove, when the stroke driving groove contacts the stroke boss, the stroke driving groove forces the stroke boss to move in the direction of the stroke rebound groove, and the stroke boss is separated from the stroke driving groove Recovery; The positioning end drives the contact piece to contact with the micro switch.

To be more specific, the protective flip cover assembly includes a first flip cover plate arranged on the panel, a second flip cover plate protruding downward from the end of the first flip cover plate, rotation shafts arranged on both sides of the first flip cover plate, and A rotating hole arranged on the panel and matched with the rotating shaft; at least one mounting hole on the cover plate is arranged below the first flip plate; an indicator window is provided on the first flip plate, and the indication The window is used to observe the working state; a first lock is provided on the first flip plate, and a second lock is provided on the panel. The first lock is matched with the second lock and passes through lead Blockade.

To be more specific, the collection assembly includes a triggering part arranged on the drive shaft and a triggered part arranged on the intermediate partition next to the drive shaft, the triggered parts are at least two, and the triggering parts rotate sequentially. Each of the triggered parts is triggered to contact, and each of the triggered parts separately collects different working states of the circuit breaker or at least two triggered parts cooperate to collect different working states.

More specifically, there are two triggered parts, respectively, a first triggered part and a second triggered part. The first triggered part is closed and the second triggered part is disconnected to collect the opening signal, and the first is The trigger is disconnected and the second triggered part is closed to collect the closing signal, and the first triggered part and the second triggered part are both closed or the first triggered part and the second triggered part are both disconnected to collect the trip signal .

More specifically, the pressing assembly includes a pressing auxiliary rod for pressing the circuit breaker test button, one end of the pressing auxiliary rod is in contact with the test button of the circuit breaker, and the other end extends to the panel, and is arranged on the panel A through hole, the pressing auxiliary rod extends into the through hole, a positioning groove is provided on the mounting seat, and the pressing auxiliary rod is inserted into the positioning groove, between the positioning groove and the pressing auxiliary rod A reset spring is arranged in between for resetting the pressing auxiliary rod, and a limiting member is arranged on the positioning groove to limit the reset position of the pressing auxiliary rod.

More specifically, the pressing auxiliary rod includes a rod body and a pressing part protruding from 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 contacts the test button; extending from the side of the rod body A limit part is provided, and interference occurs between the limit part and the slider assembly.

The beneficial effect of the present invention is that after adopting the above structure, through the interference between the safety lock assembly and the cover assembly, during maintenance, the closing operation cannot be performed by manually controlling the drive shaft, and the closing operation is closed by the first micro switch. Remote control, to prevent remote closing action at the remote end. After this structure is set in the locked state during maintenance, it can neither be operated remotely by electric nor manually operated by the local end, which further improves safety; at the same time, it will collect the working status of the circuit breaker Combined with the protection of the connection terminals and installation holes, the overall safety level of the electric operating mechanism is improved.

Description of the drawings

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

2 is a schematic diagram of the combined structure of the safety lock assembly and the cover assembly of the present invention;

Fig. 3 is a schematic top view of the combined structure of the safety lock assembly and the cover plate assembly of Fig. 2;

Figure 4 is a schematic view of the structure of the driving element of the present invention;

Figure 5 is a schematic diagram of the assembly structure of the safety slider and the intermediate partition of the present invention;

Figure 6 is a schematic diagram of the structure of the safety slider of the present invention;

Figure 7 is a schematic view of the assembled sectional structure of the safety slider and the intermediate partition of the present invention;

Figure 8 is a first structural diagram of the cover assembly of the present invention;

Figure 9 is a second structural diagram of the cover assembly of the present invention;

10 is a schematic diagram of the assembly structure of the cover plate assembly and the panel of the present invention;

11 is a second schematic diagram of the assembly structure of the cover plate assembly and the panel of the present invention;

Fig. 12 is a schematic diagram of an enlarged structure of part C in Fig. 11;

Figure 13 is a schematic diagram of the structure of the panel of the present invention;

Fig. 14 is a schematic diagram of an enlarged structure of part D in Fig. 13;

15 is a schematic structural view of another cover assembly of the electric operating mechanism of the present invention;

Figure 16 is a schematic diagram of the installation of the cover assembly of the present invention (without panel);

Fig. 17 is a structural schematic diagram 1 of the first embodiment of the panel in Fig. 15;

Fig. 18 is a second structural diagram of the first embodiment of the panel in Fig. 15;

19 is a schematic structural diagram of the second embodiment of the panel in FIG. 15;

Fig. 20 is a structural schematic diagram 1 of the first embodiment of the combination of the cover plate and the positioning end in Fig. 15;

FIG. 21 is a second structural diagram of the first embodiment of the combination of the cover plate and the positioning end in FIG. 15; FIG.

Fig. 22 is a schematic structural view of the second embodiment of the combination of the cover plate and the positioning end in Fig. 15;

FIG. 23 is a schematic diagram of an enlarged structure of part G in FIG. 22;

24 is a schematic diagram of the assembly structure of the protective flip cover assembly and the panel of the present invention;

25 is a schematic view of the assembly cross-sectional structure of the protective flip cover assembly and the panel of the present invention;

Figure 26 is a schematic view of the structure of the protective flip cover assembly of the present invention;

Figure 27 is a schematic diagram of an enlarged structure of the panel portion of the present invention;

Figure 28 is a first structural diagram of the collection component of the present invention (collection micro switch);

Figure 29 is a second structural diagram of the collection component of the present invention (photoelectric sensor);

Figure 30 is a schematic diagram of the structure of the disc of the present invention;

Figure 31 is a second structural diagram of the disc of the present invention;

32 is a schematic diagram of the assembly structure of the test button pressing structure and the mounting seat of the present invention;

Fig. 33 is a schematic diagram of an enlarged structure of part E in Fig. 32;

Figure 34 is a first structural diagram of the auxiliary pressing rod of the present invention;

35 is the second structural diagram of the auxiliary pressing rod of the present invention;

Figure 36 is a schematic diagram of the position structure of the reduction gearbox of the present invention;

Fig. 37 is a schematic diagram of an enlarged structure of part F in Fig. 36;

Figure 38 is a schematic view of the structure of the cam assembly of the present invention;

Figure 39 is a first schematic diagram of the assembly structure of the slider assembly of the present invention;

Figure 40 is a second schematic diagram of the assembly structure of the slider assembly of the present invention;

Figure 41 is a schematic view of the structure of the driving slider of the present invention;

Fig. 42 is a schematic diagram of the assembly structure of the driver and the mounting plate of the present invention.

In the figure: 1. Housing; 4. First micro switch; 11. Operation hole; 12. Mounting seat; 14. Gearbox;

2. Safety lock assembly; 21. Lock column; 22. Drive part; 23. Safety slide; 24. L-shaped limit plate; 221. First sleeve; 222. Drive block; 223. Limit block; 224. Blocking steps; 231, limit slot; 232, return spring; 233, contact part; 234, sliding block installation groove; 235, connecting end; 236, contact end;

3. Cover assembly; 31, cover; 32, touch block; 33, post; 34, push part; 311, in-place buckle; 312, first waist hole; 313, fifth inclined plane; 314, second Waist hole; 315, convex block; 316, installation of resilient part; 317, positioning end; 318, contact member; 319, driving waist hole; 3110, contact slope; 3111, first extension end; 321, third slope; 331. The second keyhole A; 332. The second inclined surface; 333. The second keyhole B; 3171, the stroke drive groove; 3181, the stroke rebound groove; 3182, the stroke boss;

5. Intermediate partition plate; 51. Slider limit block;

6. Panel; 61, cover slide slot A; 62, door opening in place card slot; 63, positioning post; 64, first lock hole A; 65, first slope; 66, door closing in place card slot; 67, cover slide Groove B; 68, in-position buckle assembly; 69, limit cavity; 610, second extension end; 611, fourth slope; 641, first lock hole B; 681, positioning end chute; 682, closing buckle Pieces; 683. Open the buckle; 684. Close the rebound groove; 685. Positioning protrusion; 686. Positioning groove;

7. Protective flip cover assembly; 71, first flip board; 72, second flip board; 73, rotating shaft; 74, indicating window; 75, rotating hole; 76, panel extension; 77, wedge block; 78, installation Hole; 711, cover installation groove; 712, third key hole; 721, semi-circular protrusion; 722, rebound groove; 731, first installation slope; 761, fourth key hole.

8. Pressing component; 81, pressing auxiliary rod; 82, positioning slot; 83, limit extension end; 84, limit end; 811, positioning rod; 812, connecting rod; 813, pressing rod; 814, limit step 815, the pressing part; 816, the limit part; 817, the blind hole; 841, the second installation slope.

9. Collecting component; 92. Disc; 93. Triggered part; 94. Perspective window; 95. Keyhole; 921. Disk surface; 922. Working part; 923. Notch; 924. Second sleeve; 925. Reinforcing rib 926, drive step; 927, positioning step; 928, collection slot; 931, first collection micro switch; 932, second collection micro switch; 933, photoelectric sensor;

10. Circuit board; 101. Wiring terminal;

11. Mounting plate; 111, fan-shaped hole; 112, drive positioning plate;

13. Drive shaft; 131. One-way slot;

15. Cam assembly; 151, cam; 152, drive rod; 153, roller;

16. Slider assembly; 161, guide rod; 162, drive slide; 163, handle hole; 164, slide drive groove; 165, blocking part; 166, curved surface; 167, guide inclined surface.

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings.

An electric operating mechanism for a circuit breaker, as shown in Figures 1 to 3, includes a housing 1, a mounting seat 12 arranged at the bottom of the housing 1, an intermediate partition 5 and a mounting plate 11 arranged in the middle of the housing 1, and The panel 6 on the top of the housing 1, the motor arranged on the intermediate partition 5, the gearbox driven by the motor, the drive shaft 13 driven by the gearbox 14, the cam assembly 15 arranged at the bottom of the drive shaft 13, and the mounting plate The slider assembly 16 on 11, the first micro switch 4 for turning off the remote control, and the circuit board 10 for receiving and sending control signals, the cam assembly 15 drives the slider assembly 16 to reciprocate, and the operation is set on the panel 6. Hole, the operation hole is provided with a cover assembly 3 for covering the operation hole, a safety lock assembly 2 is arranged on the intermediate partition 5, and a protective flip assembly 7 for covering the wiring terminals 101 on the circuit board 10, and collecting and disconnecting The collecting component 9 of the working state of the detector and the pressing component 8 for pressing the circuit breaker pressure test button; the safety lock component 2 moves to touch the first micro switch 4, and the cover component 3 moves to touch the first micro switch 4, which is safe Both the lock assembly 2 and the cover assembly 3 can be operated individually to touch the first micro switch 4; when the safety lock assembly 2 is locked, the safety lock assembly 2 touches the first micro switch 4 to close the remote control, and the cover The component 2 cannot be opened, neither the first micro switch 4 nor the drive shaft 13 can be operated. The main purpose here is to limit the cover plate assembly 3 through the safety lock assembly 2 to prevent local manipulation; when When the cover assembly 2 is opened, the cover assembly 2 touches the first micro switch 4 to close the remote control, and the safety lock assembly 2 cannot be locked and the first micro switch 4 cannot be operated. The main purpose of the safety lock assembly 2 It is to prevent the remote control from being controlled, and during manual operation, the cover assembly 3 has already controlled the first micro switch 4. At this time, the safety lock assembly 2 does not need to be controlled, so the limit operation is performed; Remote control can be achieved by powering off the motor or by prohibiting the circuit board from sending out drive signals.

As shown in Figures 2 and 3, the safety lock assembly 2 includes a lock cylinder 21 that can be rotated by a key, a drive member 22 fixed on the lock cylinder 21 and rotated with the rotation of the lock cylinder 21, and a drive member 22 arranged on the drive member 22 and the first micro A safety slider 23 is provided between the movable switches 4, and a contact portion 233 that contacts the driver 22 is provided on the side of the safety slider 23 close to the driver 22. The contact portion 233 extends to the initial position of the driver 22 and interacts with the driver 22. Contact; the rotation of the lock cylinder 21 drives the driving member 22 to rotate, and 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 touches the first micro switch 4, because the driving member 22 is in The initial position is in contact with the contact portion 233 of the safety slider 23. When the lock cylinder 21 is rotated, corresponding resistance must be overcome to push the safety slider 23 forward.

As shown in Figures 2 and 6, the contact part 233 is close to the side of the safety slider 23, that is, close to the A surface of the safety slider 23, and the contact part 233 is set in an arc shape on the side close to the middle position of the safety slider 23, that is, away from The surface B and surface B of the safety slider A are an arc, and the radius of the arc is greater than or equal to the radius of rotation of the contact point between the contact portion 233 and the driving member 22. In this solution, select equal to or slightly greater than that ; When the selection is equal, the driving member 22 completes the operation of pushing the safety slide 23 when it enters the arc from the top of the contact portion 233; when the selection is slightly larger, the driving member 22 is in pushing the safety slide from the initial position to the working position The process of block 23.

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 in the radial direction from the cylindrical surface of the first sleeve 221, and a limiting block 223. The driving block 222 As the lock cylinder 21 rotates and pushes the safety slider 23 to move to a position close to the first micro switch 4 until it comes into contact with the first micro switch 4, the limit block 223 also rotates with the rotation of the lock cylinder 21, mainly Used to limit the closing movement of the slider assembly 16; the limit block 223 and the slider assembly 16 are mutually limited. When the lock column 21 is locked, the driving block 22 pushes the safety slider 23 to touch the first micro switch 4. The limit block 223 rotates to the movement 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 the closed state, the slider assembly 16 is in the limit position The movement of the block 223 is restricted on its movement path.

As shown in Figure 42, the driving member 22 passes through the mounting plate 11, and a fan-shaped hole 111 is opened on the mounting plate 11. The first sleeve 221 and the limiting block 223 are located in the fan-shaped hole 111 and rotate in the fan-shaped hole 111 while limiting A blocking step 224 is provided on the block 223. When the first sleeve 221 moves to the edge of the fan-shaped hole 111 with the lock cylinder 21, the blocking step 224 cooperates with the fan-shaped hole 111 to block the lock cylinder 21 from continuing to rotate. On the movement path of the slider assembly 16, if the slider assembly 16 continues to move at this time, due to the action of the fan-shaped hole 111 and the blocking step 224, the lock cylinder 21 will not continue to rotate, which ensures that the safety lock assembly 2 will not rotate due to rotation. An accident that caused damage to the angle was too large.

As shown in Figures 5 and 7, the safety slider 23 is installed on the intermediate partition 5, and an L-shaped limit plate 24 is oppositely arranged on the intermediate partition 5, and the feet of the L-shaped limit plate 24 are arranged opposite to The intermediate partition 5 forms a sliding groove, and the safety sliding block 23 is installed in the sliding groove; A limit slot 231 is opened on the upper side, and the slider limit block 51 is inserted into the limit slot 231. A return spring 232 is arranged in the limit slot 231. Block limit block 51; when the safety slider 23 approaches and touches the first micro switch 4, the return spring 232 is compressed, and when the safety slider 23 finishes its work, when the lock cylinder 21 is released, The return spring 232 rebounds and resets so that the safety slider 23 returns to the initial position and no longer touches the first micro switch 4, and the first micro switch 4 is disconnected. Since the safety slider 23 is installed below the intermediate partition 5 and the first micro switch 4 is provided above the intermediate partition 5, as shown in FIG. 6, the safety slider 23 is provided with the first micro switch. 4-contact touch block. The touch block includes a connecting end 235 that extends upward from the safety slider 23 and a contact end 236 that extends from the top of the connecting end 235 to the direction of the first micro switch 4. The connecting end 235 passes through The middle partition 5.

At the same time, in order to facilitate the installation of the safety slide 23, slide installation grooves 234 are provided on both sides of the safety slide 23. The width of the slide installation groove 234 is greater than the width of the L-shaped limit plate 24. During installation, the L-shaped limit The plate 24 passes through the sliding block installation groove 234 and then slides in the direction of the first microswitch 4, and then the safety sliding plate 23 is restricted after the lock column 21 and the driving member 22 are installed, so that the sliding block installation groove 234 and L The type limit plate 24 will not be aligned when the safety slider 23 is working, that is, the safety slider 23 will not leave the slider chute.

The cover assembly shown in Figures 2, 3, 8 and 9 includes a cover plate 31 for covering the operating hole, a cover plate chute A 61 provided on the lower surface of the panel 6, and a driving cover plate 31 on the cover The shifting post 33 that slides in the plate chute A 61 manually pushes the shifting post 33 so that the cover 31 slides in the cover chute A 61 to realize the function of opening and closing the operation hole; the cover 31 is close to the cover chute A There is at least one first waist hole 312 at the position 61 side. The first waist hole 312 here can be arranged on one or both sides of the cover plate 31 as required, from the bottom of the panel 6. The two L-shaped limit blocks protruding downward from the surface, the width of the L-shaped limit block needs to be much smaller than the length of the first waist hole 312, the feet of the two L-shaped limit blocks are arranged opposite each other, and the cover slide groove A 61 It is formed by two L-shaped limiting blocks and the lower surface of the panel 6; a fourth inclined surface 611 (shown in FIG. 12) is provided on the bottom surface of the foot of the L-shaped limiting block, and the fourth inclined surface 611 is matched with the first waist hole 312, The surface of the four inclined surfaces 611 faces the position of the first waist hole 312; when the cover plate 31 is locked into the cover plate sliding groove A 61, the fourth inclined surface 611 forces the side of the first waist hole 312 to deform inwardly until the cover plate 31 enters the cover plate. The installation is completed in the board chute A 61; for more convenient installation, a fifth inclined surface 313 is provided on the cover plate 31, the fifth inclined surface 313 is arranged beside the first waist hole 312, and the fourth inclined surface 611 matches the fifth inclined surface 312, The surface of the fourth inclined surface 611 and the surface of the fifth inclined surface 312 are arranged opposite to each other, and the surface is in contact with the surface during operation.

As shown in Fig. 10 and Fig. 11, in order to keep the cover plate 31 in the open or closed position when opening or closing the operating hole, the cover plate 31 is provided with a buckle 311 in place, beside the cover plate chute A 61 Set the in-position card slot, the in-position buckle 311 cooperates with the in-position card slot to close and open the cover plate 31; When in the open state, the in-position buckle 311 cooperates with the door-opening-in-position card slot 62. When in the closed state, the in-position buckle 311 cooperates with the door-closing-in-position card slot 66; at the same time, in order to ensure that the in-position buckle 311 has a certain degree of elasticity, it is locked in place. An elongated second waist hole 314 is provided on the cover plate 31 next to the buckle 311. When the in-position buckle 311 enters or leaves the in-position groove, the in-position buckle 311 is forced to deform in the direction of the second waist hole 314. When entering or leaving the in-position card slot, the in-position buckle 311 is reset.

As shown in Figures 8 and 9, in order to improve the safety performance of the electric operating mechanism 1, it is necessary to ensure that the electric control cannot be carried out at the remote end when manual operation is performed at the local end. Therefore, the cover plate 31 is provided for touching The touch block 32 of the first micro switch 4 is manipulated, and at the same time, a third inclined surface 321 that cooperates with the first micro switch 4 is provided on the touch block 32. The third inclined surface 321 extends from the side of the first micro switch 4 Touching and pressing the first micro switch 4 can protect the contacts of the first micro switch 4 and reduce the risk of damage.

As shown in Figure 10, the post 33 is mainly used to slide the cover 31. The post 33 extends upward from the cover 31 and passes through the operating hole. After the cover 31 is locked into the cover slide A 61, the The post 33 moves from one end to the other end in the operating hole, the cover plate 31 will not be detached from the cover plate chute A 61, and the shift post 33 also has a position limiting function.

As shown in Figure 13 and Figure 14, a positioning post 63 is provided on the panel 6, a first key hole A 64 is provided on the positioning post 63, and a second key hole A 331 is provided on the shift post 33. When the cover 31 covers the operation When opening, the shifting post 33 abuts the positioning post 63, and the first locking hole A 64 is aligned with the second locking hole A 331 and is blocked by lead; a first inclined surface 65 is provided on the side of the positioning post 53 close to the shifting post 33, A second inclined surface 332 is provided on the side of the shifting column 33 close to the positioning column 63. When the positioning column 63 and the shifting column 33 are blocked by lead, the second inclined surface 332 is attached to the first inclined surface 65 and the second inclined surface 332 is located on the first inclined surface. Above 65, when designing the cover 31 due to the narrow internal space, the cover chute A 61 can only be set on the left side, and the cover 31 slides to the left to open. At this time, since most of the cover 31 is in In the cover chute A 61, the cover 31 is relatively stable; and when the cover 31 slides to the right to cover, the right side of the cover 31 appears to be suspended. At this time, the cooperation between the first inclined surface 65 and the second inclined surface 332 is very good. The problem of dangling is solved well, so that the cover plate 31 slides more smoothly.

As shown in Figures 15 and 16, the cover assembly 3 can also have another structure. The cover assembly 3 includes a cover 31 for covering the operating hole 11, and a cover slide set on the panel 6 or the cover 31. The groove B 67 and the pushing part 34 that drives the cover 31 to slide in the cover sliding groove B 67. The pushing part 34 is arranged in a strip shape on the cover 31, and the opening and closing of the cover 31 is realized by operating the pushing part 34 Closed; the cover 31 or the panel 6 is provided with a bump 315, the bump 315 is matched with the cover slide groove B 67, the corresponding bump 315 is set according to the position of the cover slide groove B 67, when the cover When the plate chute B 67 is provided on the panel 6, the protrusion 315 is provided on the cover plate 31, and when the cover plate chute B 67 is provided on the cover plate 31, the protrusion 315 is provided on the panel 6; A mounting resilient member 316 is provided on the cover plate 31 next to the block 315. The mounting resilient member 316 is in the shape of a groove or a falcon according to needs. When the bump 315 completely enters the cover chute B 67, the resilient member 316 is installed to automatically bounce up so that the bump 315 completely enters the cover chute B 67. At this time, the bump 315 can slide on the cover chute B 67. The slot B 67 moves back and forth while passing the cover chute B 67 for corresponding limit.

A positioning end 317 protrudes from the bottom of the cover plate 31, and an in-position snap assembly 68 is provided on the panel 6. When the cover plate 31 is in an open or closed state, it is restricted by the cooperation between the in-position snap assembly 68 and the positioning end 327 The position of the cover plate 31; the structure of the in-place snap assembly 68 has two forms, the first, as shown in Figure 17 and Figure 18, the in-place snap assembly 68 includes a positioning end chute 681 provided on the panel 6, in the place The two ends of the positioning end sliding groove 681 are respectively provided with an opening-in-position buckle and a closing-in-position buckle. At the same time, the opening-in-position buckle includes an opening buckle 683 protruding into the positioning end chute 681 and an opening buckle located at The opening resilience groove set next to 683, the closing in place buckle includes a closing buckle 682 protruding into the positioning end chute 681 and a closing resilience groove 684 next to the closing buckle 682. The elastic groove is close to the cover slide groove B 67, so opening the rebound groove is omitted, and its function is realized by the cover slide groove B 67; the cover 31 is moved to the open position by the push part 34, when the positioning end 317 moves to the positioning end sliding At one end of the groove 681, the positioning end 317 presses the opening buckle 683 to deform in the direction of the cover chute B 67. After the locating end 317 is completely separated from the opening buckle 683, the opening of the buckle 683 restricts the positioning end 317 from rebounding. When no force is applied to the pushing part 34, the positioning end 317 will not break away from the restriction. At the same time, the restricted space formed by the positioning end chute 681 and the opening buckle 683 just fits into the positioning end 317; through the pushing part 34 The cover plate 31 is moved to the closed position. When the positioning end 317 moves to the other end of the positioning end chute 681, the positioning end 317 forces the closing clip 682 to deform toward the closing rebound groove 684, and the positioning end 317 is completely separated from the closed position. After the buckle 682, its restricted space just accommodates the positioning end 317, and cannot be separated from the restricted space without using external force; the second type, as shown in Figs. 19 and 22, the in-position buckle assembly 68 includes a cover plate The positioning protrusion 685 between 31 and the panel 6 and the positioning groove 686 matched with the positioning protrusion 685. In this solution, the positioning protrusion 685 is provided on the panel 6, and the positioning groove 686 is provided on an L-shaped workpiece The L-shaped workpiece is used as a part of the cover chute B 67, where the cover chute B 67 is set on the cover 31, and there are two positioning protrusions 685 corresponding to the state of opening the cover and the state of closing the cover. When When the positioning protrusion 685 enters the positioning groove 686, the L-shaped workpiece will be deformed, and the L-shaped workpiece will spring back to its original shape after being completely entered.

In order to ensure beautiful appearance and at the same time play a limiting role, a limiting cavity 69 is provided on the panel 6, the cover plate 31 is set in the limiting cavity 69, and the cover slide groove B 67 is set in the limiting cavity 69. On both sides of the limit cavity 69, the in-position buckle assembly 68 is arranged on the bottom surface of the limit cavity 69; the operating hole 11 is arranged on the bottom surface of the limit cavity 69; the top opening of the limit cavity 69 is convenient for the cover plate 31 to be clamped. Inside, the thickness of the cover plate 31 is basically the same as the depth of the limiting cavity 69. When the cover plate 31 is clamped into the limiting cavity 69, the top surface of the cover plate 31 is flush with the top surface of the panel 6.

Further, when the cover 31 is in the closed state, in order to prevent non-operators from opening, the first extension end 3111 extends upward from the edge of the cover 31, and a first lock is provided on the first extension end 3111. Hole B 641; the second projecting end 610 extends upward from the panel 6, and a second locking hole B 333 is provided on the second projecting end 610; when the cover 31 is closed, the The first lock hole B 641 and the second lock hole B 333 are aligned and blocked by a padlock or lead; the first extension end 3111 and the second extension end 610 can be set as needed, and the first extension end 3111 can be set The side surface of the cover plate 31 can also be provided on the end surface of the cover plate 31, and the corresponding second extension end 610 is correspondingly provided on the side surface or the end surface of the limiting cavity 69.

This solution can also cut off the remote control of the electric operating mechanism when the cover 31 is opened. Therefore, the positioning end 317 is provided with a contact part for contacting the first micro switch 4, and there are two types of contact parts. The first type, as shown in Figure 20 and Figure 21, the contact portion includes an L-shaped contact piece 318 and a driving waist hole 319 provided on the contact piece 318. The positioning end 317 is inserted into the driving waist hole 319 and placed in The waist hole 319 is driven to slide, the positioning end 317 drives the contact piece 318 to contact the first micro switch 4, and a contact inclined surface 3110 is provided on the contact piece 318. A micro switch 4 contacts; when the positioning end 317 moves in the opening direction with the cover plate 31, the positioning end 317 slides in the driving waist hole 319, and the positioning end 317 slides from one end of the driving waist hole 319 to the other end, the positioning end 317 pushes the contact piece 318 to move in the direction of the first micro switch 4 until the contact slope 3110 on the contact piece 318 contacts the first micro switch 4 to close the remote control; when the positioning end 317 moves in the closing direction with the cover plate 31 When the positioning end 317 slides in the driving waist hole 319, the positioning end 317 slides from one end of the driving waist hole 319 to the other end, pushing the contact 318 away from the first micro switch 4, and the remote control is turned on at this time; As shown in Figure 22 and Figure 23, the contact portion includes a contact piece 318 and a stroke rebound groove 3181 provided on the contact piece 318. On both sides of the stroke rebound groove 3181, the stroke boss 3182 protrudes outward. The positioning end 317 is provided with a stroke driving groove 3171, the stroke boss 3182 is matched with the stroke driving groove 3171, the stroke boss 3182 is separated from the stroke driving groove 3171 and then recovered, the stroke driving groove 3171 first passes through the stroke boss at the beginning 3182 pushes the contact piece 318 to move. After the contact piece 318 is in contact with the first micro switch 4, the contact piece 318 is restricted. The stroke driving groove 3171 continues to move. When the stroke driving groove 3171 contacts the stroke boss 3182, the stroke driving groove 3171 forces the stroke boss 3182 to move in the direction of the stroke rebound groove 3181. After the stroke driving groove 3171 completely passes the stroke boss 3182, the stroke boss 3182 recovers and can continue to move. The way of returning the stroke driving groove 3171 is the same as the above. The above two methods can reduce the movement stroke of the contact 318. Due to the limited internal space of the electric operating mechanism, the above structure shortens the stroke of the contact 318 when the stroke of the cover 31 remains unchanged.

As shown in Figures 24 to 27, the protective flip cover assembly is provided on the first flip plate 71 on the panel 6, the rotating shafts 73 provided on both sides of the first flip plate 71, and the rotation that is provided on the panel 6 and cooperates with the rotating shaft 73 Hole 75; at least one mounting hole 78 on the cover plate 6 is provided under the first flip plate 71, which can prevent the screws in the mounting hole 78 from rusting and improve the protection level; insert the rotating shafts 73 on both sides into the rotating holes 75 respectively Inside, the first flip plate 71 rotates with the rotating shaft 73, and when the entire protective flip cover assembly 7 is closed, only the connection port of the connection terminal 101 is exposed to the outside, which can prevent dust from entering the inside as a whole.

Under normal working conditions, the structure will not be opened. To ensure safety, a first lock is provided on the first flip plate 71, and a second lock is provided on the panel 6. The first lock and the second lock The first lock member and the second lock member have many forms of cooperation. In this solution, the first lock member is the third lock hole 712 provided in the first flip plate 71, and the second lock member In order to set the panel extension end 76 upward on the panel 6, a fourth lock hole 761 is opened on the panel extension end 76, the panel extension end 76 passes through the third lock hole 712, and a lead seal is provided on the fourth lock hole 761 Or padlock.

In terms of installation, a cover mounting groove 711 with an open end is provided at the position of the first flip plate 71 close to the rotating shaft 73. The cover mounting groove 711 is perpendicular to the axis of the rotating shaft 73 and is located on the rotating shafts on both sides of the first flip plate 71. 73 is a boss protruding to both sides; the cover installation groove 711 can be provided on one side or on both sides. In this solution, the two sides are selected; when installing, manually press the first flip plate 71 inward. On both sides, make the rotation shafts 73 on both sides move inward until the distance between the rotation shafts 73 on both sides is less than the distance between the rotation holes 75 on both sides, insert the rotation shaft 73 into the rotation hole 75 and let go, both sides of the first flip plate 71 Rebound to the initial position to complete the installation; and when the material used is hard and the hand strength is not enough, a first installation inclined surface 731 is provided on the end surface of the rotating shaft 73, and the rotating shaft 73 is squeezed in through the first installation inclined surface 731 The installation is completed in the rotating hole 75.

In the closed state, if the operator forgets to lock after the operation is completed, the protective flip cover structure 7 is easily opened, such as wind or vibration, etc.; therefore, the second flip cover protruding downward from the end of the first flip cover 71 7. A first in-position locking member is provided on the inner side of the second flip plate 72, and a second in-position locking member is provided on the housing 1. The first in-position locking member is matched with the second in-position locking member; the first in-position locking member is half The circular protrusion 721, the second in-position locking member is a wedge-shaped block 77, in the process from opening to closing, the first in-position locking member first contacts the inclined surface of the wedge-shaped block 77, and then the first in-position locking member passes over the wedge-shaped The block 77 is located below the wedge-shaped block 77; and from closing to opening, the first in-position locking piece first contacts the right-angle side of the wedge-shaped block 77, so that the force used in the opening process is greater than the force used in the closing process. Better protection; since the second flip plate 72 has to rotate at a relatively small angle relative to the first flip plate 71 during the opening and closing processes, in order to reduce the risk of fracture, it is placed on the first flip plate 71 and close to A rebound groove 722 is opened at the position of the second flip plate 72; at the same time, in order to facilitate operation and indicate the position of manual operation, an inwardly spherical surface is provided on the second flip plate 72, and the use of the second flip plate 72 can facilitate opening In addition, the operating position of the fixing hole of the terminal 101 can be enlarged, and it can be operated from the front as well as from the side, which is convenient for use in a narrow space.

An indicator window 74 is provided on the first flip plate 71. The indicator window 74 is used to observe the working state of the electric operating mechanism 1. The indicator window 74 rotates with the first flip plate 71 to achieve the purpose of opening. The inner surface of the window 74 is cleaned and wiring operations are performed.

As shown in Fig. 28 and Fig. 29, the acquisition component includes a trigger part arranged on the drive shaft 13 and a triggered part 93 arranged on the intermediate partition next to the drive shaft 13. At least two triggered parts 93 can be set as required. One, four and more triggered parts 93, the trigger parts rotate around the center line of the drive shaft 13 and trigger each triggered part 93 successively, and each triggered part 93 separately collects different working states of the circuit breaker or at least two The triggered parts 93 cooperate to collect different working states. During the design process, touching different triggered parts 93 can display different working states of the circuit breaker. Each triggered part 93 represents a working state, and it can also pass through two The cooperation between three or more triggered parts 93 represents a working state.

The above-mentioned triggered part 93 may be a collection micro switch or a photoelectric sensor 933, and the principles of use and triggering of the two are basically the same. Therefore, the following description mainly uses the triggered part 93 as the collection micro switch.

The shape of the trigger part is various, it can be a cam. When the cam rotates around the center line of the drive shaft 13, the cam will contact each acquisition micro switch in turn to realize the acquisition of the working status of opening, closing and tripping; The trigger can also be a disc 92 with a notch 923 on one side. Each collection micro switch starts from contact with the disc 92. When the disc 92 rotates around the center line of the drive shaft 13, the notch 923 rotates to each collection micro switch in turn. The position of the movable switch makes the collection of the micro-switch from contact to release, that is, the collection of the micro-switch from closed to open, to realize the collection of the working state; its shape is not only limited to the above-mentioned shape, its main purpose is to collect The micro switch collects working state signals from closing to opening, opening to closing; when the triggered part 93 is a photoelectric sensor 933, the light of the photoelectric sensor 933 is covered by the cam or disc 92 to collect the signal, and the circle is used. In the case of the disk 92, a collection slot 928 is provided on the disk 92 to achieve the same function as the collection micro switch from closing to opening and opening to closing.

The main purpose of using the acquisition micro switch is to present the different working status of the circuit breaker on the remote end, and at the local end, by setting different color marks on the trigger, and in the working state of the circuit breaker through different color marks from the indicator window 4 for maintenance Personnel present.

Based on the above structure, as shown in Figs. 30 and 31, the trigger element adopts the form of a disc structure, including a disc surface 921 for indication, a working part 922 extending downward from the bottom of the disc surface 921, and a key hole opened in the middle of the disc surface 921 95. The notch 923 is provided on the working part 922. A second sleeve 924 is formed downward from the bottom of the disk surface 921 at the key hole 95. The working part 922 is ring-shaped, and the cavity between the working part 922 and the second sleeve 924 A number of reinforcing ribs 925 are provided in the body; a second sleeve 924 is sleeved on the drive shaft 13; a drive step 926 for driving the drive shaft 13 to rotate is provided inside the second sleeve 924; a positioning step 927 extends upward from the top of the disk surface 921 , The key hole 95 is provided on the positioning step 927, and the positioning step 927 cooperates with the panel 6 to locate and limit the position of the drive shaft 13; And the positioning step 927 is an integrally formed plastic part.

The circuit breaker currently only needs to distinguish between the opening, closing or tripping states, so there are two collection microswitches described in this solution, namely the first collection microswitch 931 and the second collection microswitch 932. , The first collection micro switch 931 is closed and the second collection micro switch 932 is opened to collect the opening signal, the first collection micro switch 931 is opened and the second collection micro switch 932 is closed to collect the closing signal, The first collection micro switch 931 and the second collection micro switch 932 are both closed to collect the trip signal; if the trigger is in the form of a cam, the first collection micro switch 931 and the second collection micro switch 932 are both disconnected for collection Trip signal. Based on the signal acquisition of the first acquisition microswitch 931 and the second acquisition microswitch 932, the input signal is binary. When the acquisition microswitch is in the closed state, the output is 1, and when the acquisition microswitch is in the off state, the output is 0. The above signal collection can be understood as collecting the opening signal when the received signal is 10, collecting the closing signal when the received signal is 01, and collecting the trip signal when the received signal is 00 or 11.

In order to facilitate reading at the local end, three color identifications are set on the top surface of the panel 921. Red represents the circuit breaker is closed, green represents the circuit breaker is opened, and white represents the circuit breaker trip. The three color identifications are passed. The indicator window 74 respectively presents the opening, closing or tripping status of the circuit breaker, and the working status of the circuit breaker can be directly read at the local end when the circuit is overhauled, thereby reducing safety accidents.

As shown in Figures 32 to 26, the pressing component includes a pressing auxiliary rod 81 for pressing the circuit breaker test button. One end of the pressing auxiliary rod 81 contacts the circuit breaker test button and the other end extends to the panel 6, and a through hole is provided on the panel 6. , The pressing auxiliary rod 81 extends into the through hole, a positioning groove 82 is provided on the mounting seat 12, the pressing auxiliary rod 81 is inserted into the positioning groove 82, and a return spring is provided between the positioning groove 82 and the pressing auxiliary rod 81 for Press the auxiliary lever 81 to reset, and set a limiter on the positioning slot 82 to limit the reset position of the auxiliary lever 81; when it is necessary to press the test button, the operator manually presses the auxiliary lever 81 from the panel, and the auxiliary lever 81 will be pressed. The force is transmitted to the test button and pressed. At this time, the pressing auxiliary lever 81 compresses the return spring, and then the pressing auxiliary lever 81 is released, and the pressing auxiliary lever 81 returns to the initial position through the return spring to the position of the limiter; The bottom of the auxiliary rod 81 is positioned by the positioning groove 82 so that it will not be offset, and the accuracy of pressing is improved.

Due to the limited internal space of the housing 1, it is necessary to consider that the pressing auxiliary rod 81 needs to enter from the side and press during the structural design. Therefore, the pressing auxiliary rod 81 includes a rod body and a pressing portion 815 extending from the side of the rod body, and the bottom of the rod body Insert the positioning groove 82, the bottom of the pressing part 815 contacts the test button, the function of the rod is mainly to transmit the force of manual pressing; the pressing part 815 is from the side to the top of the test button, and the pressing auxiliary lever 81 can be designed in the electric operating mechanism On the side of 1, make way for the internal transmission components.

Combining the structure of the pressing auxiliary rod 81 and the positioning groove 82, the reset structure and the limiting member can be designed, which can have various forms. In this solution, a blind hole 817 is provided inwardly at the bottom of the rod body, and the return spring is set in the blind hole Inside 817; one end of the return spring against the bottom of the positioning slot 82, the other end against the bottom of the blind hole 817, the blind hole 817 positions the return spring at the bottom of the rod, and the shape of the bottom of the rod is consistent with the shape of the positioning groove 82 and the shape of the bottom of the rod Slightly smaller than the shape of the positioning slot 82, so that the rod body can only move up and down in the positioning slot 82 to reduce the risk of offset; at the same time, the limiting member includes a limiting extension end 83 arranged next to the positioning slot 82 and extending upward. The top of the extension end 83 is perpendicular to the limit extension end 83 and extends toward the rod body. A limit step 814 is provided on the rod body to cooperate with the limit end 84; a second installation is provided on the limit end 84 The inclined surface 841, when the rod body is inserted into the installation slot 82 through the second installation inclined surface 841, the limit extension end 83 deforms and rebounds after entering; the combination of the limit extension end 83 and the limit end 84 is a buckle structure, which directly It is integrally formed with the mounting base 9, the forming method is relatively simple, and the cost is saved.

During use, when the circuit breaker is in the open state, no leakage test is required, so the test button cannot be operated in the open state, so a limit part 816 extends from the side of the rod. Interference occurs between the 816 and the slider assembly 16 of the electric operating mechanism 1, and the limit part 816 is located above the slider assembly 16. When the position of the slider assembly 16 is in the opening working state, when the auxiliary lever 81 is pressed, The limit part 816 will come into contact with the upper surface of the slider, thereby blocking the pressing auxiliary lever 81 from continuing to move downwards, and ensuring that the test button cannot be operated in the open state.

In order to further ensure the stability of the pressing auxiliary rod 81 and reduce its weight, the rod body includes a positioning rod 811 at the bottom, a connecting rod 812 at the middle, and a pressing rod 813 at the top. The cross section of the positioning rod 811 is larger than that of the connecting rod 812. Cross section, the cross section of the connecting rod 812 is larger than the cross section of the pressing rod 813, the limit step 814 is formed at the connection of the positioning rod 811 and the connecting rod 812; the connecting rod 812 and the pressing rod 813 are provided with a weight reduction groove or a weight reduction hole.

As shown in Figure 3, Figure 36 and Figure 37, the reduction box 14 is installed on the mounting plate 11 to connect the output shaft of the motor and the drive shaft 13 of the electric operating mechanism. A drive positioning plate 112 is provided on the mounting plate 11 and a through hole is opened on the drive positioning plate 111. The drive shaft 13 is arranged in the through hole. Two inwardly concave unidirectional grooves 131 are provided on the inner wall of the through hole. One side of 131 is a curved surface and smoothly transitions with the inner wall of the through hole, while the other side of the one-way groove 131 is a vertical surface in the radial direction. A flexible drive pin is provided on the cylinder of the drive shaft 13. The drive pin It can only slide out from one side of the arc of the one-way slot 131; when the drive shaft 13 rotates clockwise and the drive pin moves across the vertical surface, the drive pin is inserted into the one-way slot 131 due to elasticity and follows the arc When the surface moves, the arc slowly pushes the drive pin back to the original position until it leaves the one-way groove 131, and when the drive pin rotates to the vertical surface again, continue the above action; if it moves in the counterclockwise direction, the drive pin moves from the arc Enter, slowly release the drive pin, and wait until the drive pin moves to the vertical plane, it cannot continue to move, so as to ensure that the drive shaft 13 can only move in one direction.

As shown in Figure 38, the cam assembly 15 is arranged at the end of the drive shaft 13, including an eccentric wheel 151 and a driving rod 152 arranged on the eccentric wheel 151, and a roller 153 is arranged on the driving rod 152, and the driving rod 152 drives the roller 153 to drive around The shaft 13 rotates in the center, and its rotation track is circular; the above-mentioned eccentric wheel 151 can also be a straight rod, and its purpose is to make the movement track of the driving rod 152 circular; and the roller 153 pushes the slider assembly 16 to reciprocate.

The mounting plate 11 is arranged in a U shape. As shown in Figure 39, Figure 40 and Figure 41, the slider assembly 16 includes two parallel guide rods 161 arranged between the two protruding ends of the mounting plate 11. The driving slider 162 on the two guide rods 161, the driving slider 162 can slide along the two guide rods 161; the driving slider 161 is provided with a handle hole 163, the handle of the circuit breaker is inserted into the handle hole 163, when the driving slide When the block 162 reciprocates along the guide rod 161, it drives the handle of the circuit breaker to realize the closing and opening operations of the circuit breaker. A slider driving groove 164 is provided on the driving slider 162, the roller 153 in the cam assembly 15 is arranged in the slider driving groove 164, the slider driving groove 164 is perpendicular to the guide rod 161, and the roller 153 performs circular motion and is driven by the slider The two side walls of the groove 164 push the driving slider 162 to reciprocate on the guide rod 161, while the roller 153 reciprocates in the slider driving groove 164, and rolling friction is achieved by the rotation of the roller 153 and the side wall of the slider driving groove 164. ; At the same time an arc-shaped surface 166 is provided in the slider drive groove 164 to be combined with the guide inclined surface 167, when the drive slider 162 moves to the maximum position of the opening, the roller 153 enters the arc-shaped surface 166, and the drive slider 162 returns At this time, the guiding inclined surface 167 can block and slow down the rebound speed of the handle, and prevent damage to the corresponding components due to the rapid rebound. At the same time, a blocking portion 165 is provided on the driving slider 162, and the blocking portion 165 is used in conjunction with the limit block 223 of the safety lock assembly 2. When the safety lock assembly 2 is locked, the limit block 223 rotates to the driving slider 162 The blocking part 165 cannot move to the closing position due to the limit block 223. When the circuit breaker is in the closing position, the blocking part 165 on the driving slider 162 moves to the rotation path of the limit block 223 Above, the limiting block 223 cannot be rotated to the designated position due to the blocking portion 165, so that the safety lock assembly 2 cannot achieve the locking function.

It should be emphasized that the above are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are all It still falls within the scope of the technical solution of the present invention.

Claims

An electric operating mechanism for a circuit breaker, comprising a housing (1), a mounting seat (12) arranged at the bottom of the housing (1), an intermediate partition (5) arranged in the middle of the housing (1), and a mounting plate (11) ), the panel (6) arranged on the top of the housing (1), the motor arranged on the intermediate partition (5), the gearbox (14) driven by the motor, the drive shaft (13) driven by the gearbox (14) ), a cam assembly (15) arranged at the bottom of the drive shaft, a slider assembly (16) arranged on the mounting plate (11), the first micro switch (4) for closing the remote control, and the first micro switch (4) for receiving and sending The circuit board (10) for the control signal, the cam assembly (15) drives the slider assembly (16) to reciprocate, the panel (6) is provided with an operating hole, and the operating hole is provided for The cover assembly (3) covering the operation hole is provided with a safety lock assembly (2) on the intermediate partition (5), characterized in that it also includes a wiring terminal (101) for covering the circuit board (10) The protective flip cover component (7), the collection component (9) for collecting the working state of the circuit breaker, and the pressing component (8) for pressing the circuit breaker test button, the safety lock component (2) acts to touch the first micro The switch (4) turns off the remote control, the cover assembly (3) touches the first micro switch (4) to turn off the remote control, and the safety lock assembly (2) and the cover assembly (3) are When the safety lock assembly (2) is locked, the cover assembly (3) cannot be opened and the first micro switch (4) cannot be operated at the same time; when the cover assembly (3) is opened, The safety lock assembly (2) cannot be locked and at the same time cannot operate the first micro switch (4).
The electric operating mechanism for a circuit breaker according to claim 1, wherein the safety lock assembly (2) comprises a lock cylinder (21) that can be rotated by a key, and is fixed on the lock cylinder (21) and accompanies the lock cylinder. (21) The driving member (22) that rotates and rotates and the safety slider (23) is arranged between the driving member (22) and the first micro switch (4), and the safety slider (23) is close to A contact part (233) contacting the driving part (22) is provided on one side of the driving part (22), and the contact part (233) extends to the initial position of the driving part (22) and is in contact with the driving part (22); The rotation of the lock cylinder (21) drives the driving member (22) to rotate, and 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 is connected with the first micro The movable switch (4) touches; the contact portion (233) is close to the side of the safety slider (23), and an arc is set on the side of the contact portion (233) near the middle position of the safety slider (23) shape.
The electric operating mechanism for a circuit breaker according to claim 2, wherein the driving member (22) comprises a first sleeve (221) fixed on the lock cylinder (21), and a second sleeve (221) ) The driving block (222) and the limiting block (223) whose cylindrical surface protrudes outward in the radial direction. The driving block (222) contacts the contact part (233) and pushes the safety slider (23) to move, The limiting block (223) restricts the sliding block assembly (16) to make a closing movement; the limiting block (223) and the sliding block assembly (16) are mutually limited.
The electric operating mechanism for a circuit breaker according to claim 1, wherein the cover plate assembly includes a cover plate (31) for covering the operation hole, and a cover plate chute A provided on the lower surface of the panel (6) (61), the shift post (33) that drives the cover (31) to slide in the cover chute A (61) and the touch block (32) for touching the first micro switch (4). The cover plate (31) is provided with a long first waist hole (312) at a position close to the cover plate chute A (61) side. At least one first waist hole (312) is provided from the panel (6) Two L-shaped limit blocks protruding downward from the lower surface, the feet of the two L-shaped limit blocks are arranged opposite to each other, and the cover chute A (61) is limited by two L-shaped limit blocks. The positioning block is formed on the lower surface of the panel (6); a fourth inclined surface (611) is provided 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 locked into the cover plate chute A (61), the fourth inclined surface (611) forces the edge of the first waist hole (312) to deform inwardly until the cover plate (31) enters the cover plate chute A ( 61); in the cover plate (31) is provided with a snap (311) in place, a snap slot is provided next to the cover slide A (61), the snap in place (311) and The in-position card slot cooperates with the closing and opening positioning of the cover plate (31).
The electric operating mechanism for a circuit breaker according to claim 4, characterized in that a positioning column (63) is provided on the panel (6), and a first lock hole A ( 64). A second lock hole A (331) is provided on the shift post (33). When the cover plate (31) covers the operation hole, the shift post (33) abuts against the positioning post (63), and the first The lock hole A (64) is aligned with the second lock hole A (331) and is blocked by lead.
The electric operating mechanism for a circuit breaker according to claim 1, wherein the cover assembly includes a cover plate (31) for covering the operating hole (11), and is arranged on the panel (6) or the cover plate (31). ) On the cover chute B (67) and the pushing part (34) that drives the cover (31) to slide in the cover chute B (67), on the cover (31) or panel (6) A bump (315) is provided on the upper part, the bump (315) is matched with the cover chute B (67), and a spring-back installation is provided on the cover (31) next to the bump (315) (316), a positioning end (317) protrudes from the bottom of the cover (31), a snap assembly (68) is set in place on the panel (6), when the cover (31) is open or closed In the state, the position of the cover plate (31) is restricted by the in-position buckle assembly (68); the positioning end (317) is provided with a contact portion for contacting the first micro switch (4).
The electric operating mechanism for a circuit breaker according to claim 6, wherein the contact portion includes a contact piece (318) and a driving waist hole (319) provided on the contact piece (318), and the positioning end (317) is inserted into the driving waist hole (319) and slides in the driving waist hole (319), and the positioning end (317) drives the contact piece (318) to contact the first micro switch (4).
The electric operating mechanism for a circuit breaker according to claim 6, characterized in that the contact portion includes a contact piece (318) and a stroke rebound groove (3181) provided on the contact piece (318). The stroke bosses (3182) protrude outward on both sides of the stroke rebound groove (3181), and a stroke drive groove (3171) is opened on the positioning end (317). The stroke boss (3182) and the stroke drive The groove (3171) is matched. When the stroke driving groove (3171) is in contact with the stroke boss (3182), the stroke driving groove (3171) forces the stroke boss (3182) to move in the direction of the stroke rebound groove (3181), and the stroke boss (3182) It recovers after being separated from the stroke driving groove (3171); the positioning end (317) drives the contact piece (318) to contact with the first micro switch (4).
The electric operating mechanism for a circuit breaker according to claim 1, wherein the protective flip cover assembly (7) comprises a first flip cover plate (71) arranged on the panel (6), and a second flip cover plate (71) ) The second flip plate (72) with its end protruding downward, the rotating shafts (73) arranged on both sides of the first flip plate (71), and the rotating shafts (73) arranged on the panel (6) and matched with the rotating shaft (73) Rotation hole (75); at least one mounting hole (78) on the cover plate (6) is arranged below the first flip plate (71); an indicator window is provided on the first flip plate (71) (74), the indicator window (74) is used to observe the working status; a first lock is provided on the first flip plate (71), and a second lock is provided on the panel (6) , The first lock piece is matched with the second lock piece and is blocked by lead.
The electric operating mechanism for a circuit breaker according to claim 1, wherein the collection assembly (9) includes a trigger set on the drive shaft (13) and an intermediate partition ( ( 93) Collect different working states of the circuit breaker separately or at least two triggered parts (93) cooperate to collect different working states.
The electric operating mechanism for a circuit breaker according to claim 10, characterized in that there are two triggered parts (93), a first triggered part and a second triggered part, and the first triggered part is closed and The second triggered part is disconnected to collect the opening signal, the first triggered part is opened and the second triggered part is closed to collect the closing signal, the first triggered part and the second triggered part are both closed or the first triggered part is closed. Both the triggering part and the second triggered part are disconnected to collect the trip signal.
The electric operating mechanism for a circuit breaker according to claim 1, wherein the pressing component (8) comprises a pressing auxiliary lever (81) for pressing the circuit breaker test button, and the pressing auxiliary lever (81) One end is in contact with the test button of the circuit breaker and the other end extends to the panel (6). A through hole is provided on the panel (6). The pressing auxiliary rod (81) extends into the through hole. The mounting seat (12) is provided with a positioning groove (82), the pressing auxiliary rod (81) is inserted into the positioning groove (82), between the positioning groove (82) and the pressing auxiliary rod (81) A reset spring is provided for resetting the pressing auxiliary lever (81), and a limit member is arranged on the positioning groove (82) to limit the reset position of the pressing auxiliary lever (81).
The electric operating mechanism for a circuit breaker according to claim 12, wherein the pressing auxiliary rod (81) comprises a rod body and a pressing portion (815) protruding from the side of the rod body, and the bottom of the rod body is inserted into the positioning groove (82), the bottom of the pressing portion (815) contacts the test button; a limiting portion (816) extends from the side of the rod body, the limiting portion (816) and the slider assembly (16) Interference occurs between.