Electric operating device for circuit breaker

Abstract

The present invention relates to the field of low-voltage electrical appliances, and in particular to an electric operating device for a circuit breaker, wherein when a switching push plate is located at a first position (a second position), the electric operating device is switched to a manual working state (an automatic working state), and a power circuit and / or a signal circuit are disconnected (or the power circuit and / or the signal circuit are connected); when the switching push plate is located at the second position and a locking mechanism is switched from an unlocked state to a locked state, the locking switching push plate is simultaneously driven to disconnect the power circuit and / or the signal circuit; when the switching push plate is located at the first position and the locking mechanism is switched from an unlocked state to a locked state, the locking mechanism drives the switching push plate to move from the first position to the second position and locks the switching push plate, and simultaneously drives the power circuit and / or the signal circuit to disconnect; the electric operating device for a circuit breaker of the present invention ensures that when the electric operating device is locked, the circuit breaker cannot be closed by manual operation.

Description

Technical Field

[0001] The invention relates to the field of low-voltage electrical appliances, and in particular to an electric operating device for a circuit breaker. Background Art

[0002] Existing circuit breakers, especially those with electric operating devices, often have the following shortcomings:

[0003] 1. The electric operating device is often equipped with a push plate for manual / automatic switching, and is also equipped with a locking mechanism to lock the electric operating device in a specific state to prevent misoperation; however, in existing circuit breakers, the push plate and the locking mechanism are two structures with independent functions. If the push plate switches the electric operating device to the manual working state, the locking mechanism locks the electric operating device. Although the automatic working state of the electric operating device is disabled, the circuit breaker can still be closed by manual operation, which poses a safety hazard.

[0004] Second, since the circuit breaker with an electric operating device is relatively thick, when it is installed in the meter box, it often cannot meet the thickness requirement of the meter box. Summary of the invention

[0005] The object of the present invention is to overcome the defects of the prior art and provide an electric operating device for a circuit breaker, wherein a locking mechanism cooperates with a switching push plate to ensure that when the electric operating device is locked, the circuit breaker cannot be closed by manual operation.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] An electric operating device for a circuit breaker, comprising a first bracket 1, and a switching push plate 3, a locking mechanism 4 and a slider 203 respectively arranged on the first bracket 1; the slider 203 is driven and matched with an operating handle of the circuit breaker, and the slider 203 reciprocates to drive the circuit breaker to close / open; when the switching push plate 3 is in a first position, the electric operating device is switched to a manual working state and the power circuit and / or signal circuit of the electric operating device driven by the switching push plate 3 is disconnected; when the switching push plate 3 is in a second position, the electric operating device is switched to an automatic working state and the power circuit and / or signal circuit of the electric operating device is turned on;

[0008] When the switch push plate 3 is in the second position and the locking mechanism 4 is switched from the unlocked state to the locked state, the locking mechanism 4 locks the switch push plate 3 and drives the power circuit and / or signal circuit of the electric operating device to be disconnected;

[0009] The switching push plate 3 is in the first position. When the locking mechanism 4 is switched from the unlocked state to the locked state, the locking mechanism 4 drives the switching push plate 3 to move from the first position to the second position and locks the switching push plate 3. At the same time, the locking mechanism 4 drives the power circuit and / or signal circuit of the electric operating device to be disconnected.

[0010] Preferably, the locking mechanism 4 switches between the unlocked state and the locked state by rotating itself.

[0011] Preferably, the electric operating device also includes a first switch component 5; when the switching push plate 3 is in the first position, the first switch component 5 is driven to switch to the first working state, so that the power circuit or signal circuit of the electric operating device is disconnected; when the switching push plate 3 is in the second position, the first switch component 5 is switched to the second working state, and the power circuit or signal circuit of the electric operating device is turned on; when the locking mechanism 4 is switched to the locked state, the first switch component 5 is driven to switch to the first working state; when the locking mechanism 4 is switched to the unlocked state, the first switch component 5 is switched to the second working state.

[0012] Preferably, the first switch element 5 is a micro switch, including a first reed 51; when the switching push plate 3 is in the first position or the second position, it presses or releases the first reed 51 respectively; when the locking mechanism 4 is in a locked state or an unlocked state, it presses or releases the first reed 51 respectively.

[0013] Preferably, the locking mechanism 4 includes a driving arm 43 - 0 . When the locking mechanism 4 is switched to the locked state, the locking mechanism 4 drives the first switch member 5 to switch to the second working state, and the driving arm 43 - 0 is limitedly matched with the first bracket 1 .

[0014] Preferably, the first bracket 1 includes a bracket limiting arm 19, and the driving arm 43-0 and the bracket limiting arm 19 are limitedly matched through a tooth-groove structure.

[0015] Preferably, the switching push plate 3 includes a push plate passive shoulder 32 , and when the locking mechanism 4 switches from the unlocked state to the locked state, the driving arm 43 - 0 drives the switching push plate 3 to move from the first position to the second position through the push plate passive shoulder 32 .

[0016] Preferably, the push plate active shoulder 32 includes a push plate active surface 32-0 and a push plate locking surface 32-1 connected by bending, and the driving arm 43-0 drives the switch push plate 3 to move through the push plate active surface 32-0, and the driving arm 43-0 and the push plate locking surface 32-1 are limitedly matched to lock the switch push plate 3.

[0017] Preferably, the locking mechanism 4 further includes a slider locking finger 43 - 2 . When the locking mechanism 4 is switched to the locked state, the slider locking finger 43 - 2 cooperates with the slider 203 to prevent it from moving in the closing direction.

[0018] Preferably, the circuit breaker further includes a test button 7, the locking mechanism 4 includes a button locking strip 43-1, the test button 7 includes a button limit platform 70 arranged on one side thereof, and when the locking mechanism 4 is switched to the locked state, the button locking strip 43-1 moves to one side of the button limit platform 70 to cooperate with its limit position to prevent the movement of the test button 7.

[0019] Preferably, the first bracket 1 includes a push plate locking arm 13, and the push plate locking arm 13 includes a push plate locking tooth; the switching push plate 3 includes a first locking groove 34 and a second locking groove 35, and when the switching push plate 3 is in the first position, the push plate locking tooth cooperates with the first locking groove 34 in a limiting manner, and when the switching push plate 3 is in the second position, the push plate locking tooth cooperates with the second locking groove 35 in a limiting manner.

[0020] Preferably, the locking mechanism 4 comprises a rotatably arranged locking body 43, the locking body 43 comprises a slider locking finger 43-2 arranged at one axial end thereof, and a driving arm 43-0 and a button locking strip 43-1 respectively arranged on radial side walls of the locking body 43.

[0021] Preferably, the driving arm 43-0 includes a first limiting groove 43-01 and a second limiting groove 43-02 arranged side by side and at intervals on one end thereof, and an intermediate limiting protrusion 43-03 formed between the first limiting groove 43-01 and the second limiting groove 43-02; the bracket limiting arm 19 includes a first limiting protrusion 14 and a second limiting protrusion 15 arranged side by side and at intervals, and an intermediate limiting groove 14-15 formed between the first limiting protrusion 14 and the second limiting protrusion 15; the first limiting protrusion 14, the second limiting protrusion 15, and the intermediate limiting groove 14-15 are respectively limited and matched with the first limiting groove 43-01, the second limiting groove 43-02 and the intermediate limiting protrusion 43-03, and the intermediate limiting protrusion 43-03 is also locked and matched with the switching push plate 3.

[0022] Preferably, the locking mechanism 4 further comprises a lock core 41 and a lock sleeve 42 , the lock core 41 is rotatably disposed in the lock sleeve 42 , the locking body 43 is connected to the lock core 41 and rotates synchronously, and the lock sleeve 42 is disposed on the first bracket 1 and cooperates with the first bracket 1 in a limiting manner.

[0023] The electric operating device of the circuit breaker of the present invention can disable the manual working state and the automatic working state of the electric operating device when the locking mechanism 4 is switched from the unlocked state to the locked state, regardless of whether the electric operating device is in the manual working state or the automatic working state, thereby improving the convenience of operation, avoiding the situation that the electric working state of the electric operating device is disabled by the locking mechanism but the circuit breaker can be closed manually in the prior art, and improving the safety of electricity use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1It is a structural schematic diagram of the electric operating device of the circuit breaker of the present invention, the switch push plate is in the second position, the electric operating device is in the automatic working state, and the locking mechanism is in the unlocked state;

[0025] Figure 2 The present invention Figure 1 An enlarged structural diagram of part A;

[0026] Figure 3 The present invention Figure 1 A schematic diagram of the enlarged structure of part B;

[0027] Figure 4 It is a structural schematic diagram of the electric operating device of the circuit breaker of the present invention, the switch push plate is in the first position, the electric operating device is in the manual working state, and the locking mechanism is in the unlocked state;

[0028] Figure 5 It is a structural schematic diagram of the electric operating device of the circuit breaker of the present invention, the locking mechanism is switched from the unlocked state to the locked state, and at the same time the locking mechanism drives the switching push plate to move from the first position to the second position;

[0029] Figure 6 It is a structural schematic diagram of the electric operating device of the circuit breaker of the present invention, the switching push plate is located at the second position, the locking mechanism is in a locked state and locked with the switching push plate;

[0030] Figure 7 The present invention Figure 6 A schematic diagram of the enlarged structure of part C;

[0031] Figure 8 is a schematic diagram of the result of the electric operating device of the circuit breaker of the present invention, showing the structure of the first bracket;

[0032] Fig. 9 It is a schematic diagram of the structure of the switch push plate of the present invention, showing the structure of the push plate limit foot and the push plate guide rib;

[0033] Fig.10 is a schematic structural diagram of a switch push plate of the present invention, showing the structures of the first locking groove and the second locking groove;

[0034] Fig.11 It is a structural schematic diagram of the locking mechanism of the present invention;

[0035] Fig.12 is a schematic structural diagram of the locking mechanism of the present invention, showing the structure of the locking arm;

[0036] Fig.13 It is a schematic diagram of the structure of the locking mechanism and the slider;

[0037] Fig.14It is a schematic diagram of the structure of the locking mechanism and the test button;

[0038] Fig.15 It is a schematic diagram of the front projection structure of the mounting plate;

[0039] Fig.16 It is a schematic diagram of the side projection structure of the mounting plate;

[0040] Fig.17 This is a schematic diagram of the result of the cooperation between the mounting plate and the guide rail;

[0041] Fig.18 is a schematic structural diagram of a circuit breaker, showing a positioning slot and a second connection hole;

[0042] Fig.19 It is a schematic diagram of the structure of the circuit breaker, mounting plate and guide rail. DETAILED DESCRIPTION

[0043] The following is combined with Figure 1-19 The given embodiments further illustrate the specific implementation of the electric operating mechanism and the mounting structure of the circuit breaker of the present invention. The electric operating device and the mounting structure of the circuit breaker of the present invention are not limited to the description of the following embodiments.

[0044] like Figure 1 , 4 As shown in Figures 6 and 13, the electric operating device of the circuit breaker of the present invention comprises a first bracket 1, and a switching push plate 3, a locking mechanism 4 and a slider 203 respectively arranged on the first bracket 1; the slider 203 is driven and cooperated with the operating handle of the circuit breaker, and the slider 203 reciprocates to drive the circuit breaker to close / open; when the switching push plate 3 is in the first position, the electric operating device is switched to the manual working state and the switching push plate 3 drives the power circuit and / or signal circuit of the electric operating device to be disconnected, and when the switching push plate 3 is in the second position, the electric operating device is switched to the automatic working state and the power circuit or signal circuit of the electric operating device is turned on; when the switching push plate 3 is in the second position and the locking mechanism 4 is converted from the unlocked state to the locked state, the locking mechanism 4 locks the switching push plate 3 and drives the power circuit and / or signal circuit of the electric operating device to be disconnected; when the switching push plate 3 is in the first position and the locking mechanism 4 is converted from the unlocked state to the locked state, the locking mechanism 4 drives the switching push plate 3 to move from the first position to the second position and locks the switching push plate 3, and at the same time, the locking mechanism 4 drives the power circuit and / or signal circuit of the electric operating device to be disconnected.

[0045] The electric operating device of the circuit breaker of the present invention can disable the manual working state and the automatic working state of the electric operating device when the locking mechanism 4 is switched from the unlocked state to the locked state, regardless of whether the electric operating device is in the manual working state or the automatic working state, thereby improving the convenience of operation, avoiding the situation that the electric working state of the electric operating device is disabled by the locking mechanism but the circuit breaker can be closed manually in the prior art, and improving the safety of electricity use.

[0046] It should be pointed out that the power supply circuit provides working power for the electric operating device, and the signal circuit is used to transmit the closing / opening signal given externally. Only when the power supply circuit and the signal circuit are turned on at the same time, the electric operating device can enter the automatic working state. If either of them is disconnected, the automatic working state is prohibited.

[0047] Preferably, Figure 1 , 4 As shown in FIG. 6 , the locking mechanism 4 switches between the unlocking state and the locking state by rotating itself.

[0048] Preferably, Figure 1 , 4 -6, the electric operating device also includes a first switch 5; when the switch push plate 3 is in the first position, the first switch 5 is driven to switch to the first working state, so that the power circuit or signal circuit of the electric operating device is disconnected; when the switch push plate 3 is in the second position, the first switch 5 is switched to the second working state, and the power circuit or signal circuit of the electric operating device is turned on; when the locking mechanism 4 is switched to the locked state, the first switch 5 is driven to switch to the first working state; when the locking mechanism 4 is switched to the unlocked state, the first switch 5 is switched to the second working state. Further, as Figure 1 , 4 -6, the first switch element 5 is a micro switch, including a first reed 51; when the switching push plate 3 is in the first position or the second position, it presses or releases the first reed 51 respectively; when the locking mechanism 4 is in a locked state or an unlocked state, it presses or releases the first reed 51 respectively.

[0049] Preferably, Fig.13 As shown, when the locking mechanism 4 is switched to the locked state, the locking mechanism 4 and the slider 203 are limited and cooperated to prevent it from moving in the closing direction, thereby realizing reliable locking of the electric operating device, so that the user cannot operate the electric operating device to close the circuit breaker neither by electric means nor by manual means (because both the electric and manual means require the slider 203 to move back and forth to drive the circuit breaker to close / open). Further, as Fig.13As shown, the locking mechanism 4 includes a slider locking finger 43-2. ​​When the locking mechanism 4 is switched to the locked state, the slider locking finger 43-2 cooperates with the slider 203 to prevent it from moving toward the closing square, which is beneficial to further ensure that the circuit breaker is locked in the open state and improve the safety of electricity use.

[0050] Preferably, Fig.13 and 14 As shown, the electric operating device of the circuit breaker of the present invention also includes a test button 7, and the locking mechanism 4 includes a button locking strip 43-1. When the locking mechanism 4 is switched to the locked state, the button locking strip 43-1 cooperates with the test button 7 to prevent the movement of the test button 7, and prevents the test button 7 from moving when it is pressed.

[0051] Preferably, Fig.13 As shown, after the slider 203 drives the circuit breaker to open, the slider 203 and the test button 7 are limited and matched to prevent the test button 7 from moving. Fig.13 As shown, the slider 203 includes a slider limiting strip 203 - 1 , and the test button 7 includes a button limiting rib 71 . The slider limiting strip 203 - 1 and the button limiting rib 71 cooperate to prevent the test button 71 from moving.

[0052] Preferably, pressing the test button 7 closes the moving contact and the stationary contact of the circuit breaker. When the circuit breaker is opened, the locking mechanism 4 and / or the slider 203 cooperate with the test button 7 to limit the position, so as to prevent the user from mistakenly operating the test button 7 to close the moving contact and the stationary contact of the circuit breaker when the electric operating device is locked, thereby further improving the safety of electricity use.

[0053] Preferably, Fig.13 and 14 As shown, the electric operating device of the circuit breaker of the present invention also includes a test button 7, and pressing the test button 7 causes the circuit breaker to trip; the slider 203 and / or the locking mechanism 4 cooperate with the test button 7 when the circuit breaker is opened to prevent the circuit breaker from tripping due to pressing the test button 7.

[0054] Preferably, Figure 1 , 3 As shown in FIGS. 6 and 7 , the locking mechanism 4 includes a driving arm 43 - 0. When the locking mechanism 4 is switched to the locked state, the driving arm 43 - 0 cooperates with the first bracket 1 to limit the locking mechanism 4 so that the locking mechanism 4 is reliably maintained in the locked state.

[0055] like Figure 15-19 As shown, the present invention also discloses a circuit breaker mounting structure, which includes a mounting plate 2a and a guide rail 1a, a circuit breaker 3a is fixedly arranged on the mounting plate 2a, and the mounting plate 2a is fixedly arranged on the guide rail 1a. The circuit breaker mounting structure of the present invention has a simple structure and is easy to assemble.

[0056] Preferably, Fig.15 , 16 As shown in , 18, the installation structure further includes a first positioning structure, and the circuit breaker 3a and the installation plate 2a are limitedly matched through the first positioning structure. Fig.15 , 16 As shown in FIG. 18 , each set of the first positioning structures includes a positioning protrusion 201a and a positioning groove 31a used in conjunction with each other; in the same set of the positioning protrusion 201a and the positioning groove 31a, one is arranged on the mounting plate 2a, and the other is arranged on the circuit breaker 31a. The first positioning structure is conducive to improving the accuracy and efficiency of assembling the circuit breaker 3a and the mounting plate 2a.

[0057] Preferably, Fig.16 As shown, the mounting plate 2a includes a bearing portion 20-21a and a connecting portion 22a. The bearing portion 20-21a is a U-shaped structure, including a bottom plate 20a and a side plate 21a. The bottom plate 20a and the connecting portion 22a are respectively connected to the two ends of the side plate 21a and are respectively bent to the sides of the side plate 21a; the circuit breaker 3a is arranged in the bearing portion 20-21a and fixedly connected to the bottom plate 20a. The two connecting portions 22a are respectively connected to two parallel and spaced guide rails 1a, and the bearing portion 20-21a is located between the two guide rails 1a. The matching mode of the mounting plate 2a, the circuit breaker 3a and the guide rail 1a is conducive to making the circuit breaker 3a closer to the mounting bottom plate of the meter box, so that the circuit breaker 3a meets the thickness requirement of the meter box.

[0058] The electric operating device for the circuit breaker of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0059] like Figure 1 , 4 As shown in Figures 6 and 13, the electric operating device of the circuit breaker of the present invention comprises a first bracket 1, and a switching push plate 3, a locking mechanism 4 and a slider 203 respectively arranged on the first bracket 1; the slider 203 is driven and matched with the operating handle of the circuit breaker, and the slider 203 reciprocates to drive the circuit breaker to close / open; Figure 4 As shown, when the switch push plate 3 is in the first position, the electric operating device is switched to the manual working state and the power circuit and / or signal circuit of the switch push plate 3 driving the electric operating device is disconnected; Figure 1 As shown, when the switch push plate 3 is in the second position, the electric operating device switches to the automatic working state and the power circuit and / or signal circuit of the electric operating device is turned on; Figure 1 and 6 As shown, the switch push plate 3 is in the second position, and when the locking mechanism 4 switches from the unlocked state to the locked state, the locking mechanism 4 locks the switch push plate 3 and drives the power circuit and / or signal circuit of the electric operating device to disconnect; Figure 4-6 As shown, the switching push plate 3 is located in the first position. When the locking mechanism 4 switches from the unlocked state to the locked state, the locking mechanism 4 drives the switching push plate 3 to move from the first position to the second position and locks the switching push plate 3. At the same time, the locking mechanism 4 drives the power circuit and / or signal circuit of the electric operating device to disconnect.

[0060] It should be pointed out that Fig.13 As shown, the electric operating device of the circuit breaker of the present invention also includes a main shaft 2, a cam assembly arranged at one end of the main shaft 2, a motor and a gear set, and a slider track; the other end of the main shaft 2 is provided with an operating hole 21, when the switch push plate 3 is in the first position, the operating hole 21 is avoided, and when the switch push plate 3 is in the second position, the operating hole 21 is blocked; the motor is driven and matched with the main shaft 2 through the gear set, the slider 203 is slidably set on the slider track, and the main shaft 2 is driven and matched with the slider 203 through the cam assembly to drive the slider 203 to slide back and forth.

[0061] Preferably, Figure 1 , 4 As shown in FIG. 6 , the locking mechanism 4 switches between the unlocking state and the locking state by rotating itself.

[0062] Preferably, Figure 1 , 4 -6, the electric operating device includes a first switch member 5; Figure 4 As shown, when the switching push plate 3 is in the first position, the first switch member 5 is driven to switch to the first working state, so that the power circuit or the signal circuit of the electric operating device is disconnected; Figure 1 As shown, when the switching push plate 3 is in the second position, the first switch 5 is switched to the second working state, and the power circuit or signal circuit of the electric operating device is turned on; Figure 6 As shown, when the locking mechanism 4 switches to the locked state, the first switch member 5 is driven to switch to the first working state; Figure 1 and 4 As shown, when the locking mechanism 4 is switched to the unlocking state, the first switch member 5 is switched to the second working state. Figure 1 , 4 -6, the first switch element 5 is a micro switch, including a first reed 51; when the switching push plate 3 is located at the first position / second position, the first reed 51 is pressed / released; when the locking mechanism 4 is in a locked state / unlocked state, the first reed 51 is pressed / released.

[0063] It should be noted that the first switch element 5 can be connected in series with a normally closed switch element in the power circuit or signal circuit of the electric operating device, that is, when the first switch element 5 is in the first working state or the second working state, the first switch element 5 is disconnected or turned on.

[0064] Specifically, Figure 1 and 4 In the direction shown, the switch push plate 3 moves left and right to switch between the first position and the second position; Figure 1 , 4 As shown in FIG. 6 , the locking mechanism 4 can switch between the locked state and the unlocked state by rotating itself in the clockwise direction and the counterclockwise direction; Figure 4 As shown, the switch push plate 3 is in the first position, the locking mechanism 4 is in the unlocked state, and the locking mechanism 4 is operated to rotate clockwise to switch to the locked state, as shown in FIG. Figure 5 As shown, during the rotation of the locking mechanism 4, the switching push plate 3 will be driven to move rightward (from the first position to the second position). Figure 6 As shown, the locking mechanism 4 switches to the locking state and drives the switching push plate 3 to move to the second position, the switching push plate 3 blocks the operating hole 21 of the main shaft 2, and at the same time the locking mechanism 4 presses the first spring leaf 51 of the first switch member 5 to cut off the power circuit or signal circuit of the electric operating device.

[0065] Preferably, Figure 1 , 4 -6, the locking mechanism 4 includes a driving arm 43-0. When the locking mechanism 4 switches to the locked state, the locking mechanism 4 drives the first switch 5 to switch to the second working state and cooperate with the first bracket 1 in a limited position. Figure 1 , 3 As shown in , 6 and 7, the first bracket 1 includes a bracket limiting arm 19, and the driving arm 43-0 and the bracket limiting arm 19 are limited by the tooth groove structure. Fig.12 As shown, the driving arm 43-0 includes a first limiting groove 43-01 and a second limiting groove 43-02 arranged side by side and spaced apart at one end thereof, and an intermediate limiting protrusion 43-03 formed between the first limiting groove 43-01 and the second limiting groove 43-02; Figure 3 As shown, the bracket limiting arm 19 includes a first limiting protrusion 14 and a second limiting protrusion 15 arranged side by side and spaced apart, and an intermediate limiting groove 14-15 formed between the first limiting protrusion 14 and the second limiting protrusion 15; the first limiting protrusion 14, the second limiting protrusion 15 and the intermediate limiting groove 14-15 are respectively limited and cooperated with the first limiting groove 43-01, the second limiting groove 43-02 and the intermediate limiting protrusion 43-03.

[0066] Preferably, Figure 1 , 3As shown in Figures 6 and 7, when the locking mechanism 4 switches to the locked state, the driving arm 43-0 first squeezes the bracket limit arm 19 to cause it to undergo a certain deformation. After the locking mechanism 4 switches to the locked state, the driving arm 43-0 completes the limit cooperation with the bracket limit arm 19, and then the bracket limit arm 19 is completely or partially reset to form a stable limit cooperation between the driving arm 43 and the bracket limit arm 19, so that the locking mechanism 4 can be reliably and stably maintained in the locked state.

[0067] Preferably, Figure 1 , 4 As shown in Figures 6 and 9-10, the switch push plate 3 further includes a push plate driving platform 33. When the switch push plate 3 moves to the first position, the push plate driving boss 33 drives and cooperates with the first spring 51 of the first switch member 5 to switch the first switch member 5 to the first working state. Fig. 9 and 10 As shown, the push plate driven shoulder 32 and the push plate driving boss 33 are located at the same side edge of the switching push plate 3.

[0068] Preferably, Figure 1 , 4 -6, 9, and 10, the switching push plate 3 includes a push plate passive shoulder 32. When the locking mechanism 4 switches from the unlocked state to the locked state, the driving arm 43-0 drives the switching push plate 3 to move from the first position to the second position through the push plate passive shoulder 32. Further, as Fig. 9 and 10 As shown, the push plate passive shoulder 32 includes a push plate passive surface 32-0 and a push plate locking surface 32-1 connected by bending, and the driving arm 43-0 drives the switch push plate 3 to move through the push plate passive surface 32-0, and the driving arm 43-0 and the push plate locking surface 32-1 limit the position to lock the switch push plate 3. Further, as Figure 7 As shown, the middle limiting protrusion 43-03 of the driving arm 43-0 abuts against and limits the locking surface 32-1 of the push plate to lock the switch push plate 3. Further, as Figure 6 and 7 As shown, the push plate actuated surface 32-0 is perpendicular to the moving direction of the switching push plate 3, and the angle between the push plate actuated surface 32-0 and the push plate locking surface 32-1 is an obtuse angle. When the driving arm 43-0 locks the switching push plate 3, the end face of the middle limit protrusion 43-03 is parallel to the push plate locking surface 32-1 and is in limit fit.

[0069] Preferably, Figure 1 , 2As shown in , 4, 6, and 10, the first bracket 1 includes a push plate locking arm 13, and the push plate locking arm 13 includes a push plate locking tooth; the switch push plate 3 includes a first locking groove 34 and a second locking groove 35, and when the switch push plate 3 is in the first position, the push plate locking tooth cooperates with the first locking groove 34 in a limiting manner, and when the switch push plate 3 is in the second position, the push plate locking tooth cooperates with the second locking groove 35 in a limiting manner. The push-press locking tooth cooperates with the first locking groove 34 or the second locking groove 35 in a limiting manner, so that the switch push plate 3 can be reliably and stably maintained in the first position or the second position, and the switch push plate 3 can be prevented from being easily changed in position due to vibration or accidental touch, which may affect the electric operating device from not being able to work properly. Further, as Fig.10 As shown, the first locking groove 34 and the second locking groove 35 are arranged side by side and spaced apart at one side edge of the switching push plate 3 , and the push plate actuated shoulder 32 is arranged at the other side edge of the switching push plate 3 .

[0070] Preferably, Figure 8 As shown, the first bracket 1 includes a track hole 11 and a track groove 18; Fig. 9 As shown, the switching push plate 3 includes a push plate limiting foot 31 and a push plate guide rib 36 respectively matched with the track hole 11 and the track groove 18. Figure 8 As shown, the track hole 11 and the track groove 18 are arranged side by side and spaced apart; Fig. 9 As shown, the push plate limiting foot 31 and the push plate guide rib 36 are arranged on the same side of the switch push plate 3. Figure 8 As shown, the track hole 11 includes a track hole travel section 11-1 and a track hole insertion hole 11-0 disposed at one end of the track hole travel section 11-1 and connected thereto, the track hole insertion hole 11-0 is a waist-shaped hole, and the track hole 11 is a T-shaped structure as a whole; Fig. 9 As shown, the push plate limit foot 31 is an overall T-shaped structure, including a first limit foot section 31-0 and a second limit foot section 31-1, and both ends of the second limit foot section 31-1 are respectively connected to the switching push plate 3 and the first limit foot section 31-0, and the outer diameter of the first limit foot section 31-0 is larger than the outer diameter of the second limit foot section 31-1, and the outer diameter of the first limit foot section 31-0 is larger than the track hole travel section 11-1.

[0071] Preferably, Fig.13 As shown, the locking mechanism 4 also includes a slider locking finger 43-2. ​​When the locking mechanism 4 is switched to the locked state, the slider locking finger 43-2 cooperates with the slider 203 to prevent it from moving in the closing direction. Fig.13 As shown, the slider 203 includes a slider limiting groove 203-0. After the locking mechanism 4 is switched to the locked state, the slider locking finger 43-2 is inserted into the slider limiting groove 203-0 to prevent the slider 203 from moving in the closing direction (to the left).

[0072] Preferably, Fig.13 and 14 As shown, the electric operating device of the circuit breaker of the present invention includes a test button 7; when the locking mechanism 4 is switched to the locked state, the locking mechanism 4 and the slider 203 are limited and cooperated to prevent it from moving in the closing direction. Fig.13 and 14 As shown, the locking mechanism 14 includes a button locking strip 43-1, and the test button 7 includes a button limiter 70 disposed on one side thereof. When the locking mechanism 4 is switched to the locked state, the button locking strip 43-1 moves to one side of the button limiter 70 to cooperate with the limiter 70, thereby preventing the test button 7 from moving when it is pressed. Specifically, as Fig.14 In the direction shown, when the locking mechanism 4 is switched to the locked state, the button locking strip 43 - 1 moves to the lower side of the button limit platform 70 to cooperate with the limit platform 70 to prevent the test button 7 from moving downward when it is pressed.

[0073] Preferably, Fig.13 As shown, after the slider 203 drives the circuit breaker to close, the slider 203 and the test button 7 are limited and matched to prevent the test button 7 from moving. Fig.13 As shown, the slider 203 includes a slider limiting strip 203 - 1 , and the test button 7 includes a button limiting rib 71 . The slider limiting strip 203 - 1 cooperates with the button limiting rib 71 to prevent the test button 7 from moving.

[0074] Preferably, pressing the test button 7 closes the moving contact and the stationary contact of the circuit breaker.

[0075] Preferably, the circuit breaker is tripped by pressing the test button 7. Further, the circuit breaker comprises an operating mechanism, the operating mechanism comprises a locking member and a tripping member that lock and cooperate, and pressing the test button 7 releases the locking member and the tripping member from locking and cooperating.

[0076] like Fig.13 As shown, an embodiment of the test button 71 is shown: the test button 7 is a long rod-shaped structure, which includes a square column part inserted on the first bracket 1 and slidingly matched therewith, and the button limit platform 70 and the button limit rib 71 are arranged side by side and spaced apart on one side of the square column part.

[0077] Preferably, Fig.13 and 14 As shown, the slider limiting groove 203 - 0 and the slider limiting strip 203 - 1 are both arranged at the side of the slider 203 close to the test button 7 , and the slider limiting strip 203 - 1 protrudes toward the direction where the test button 7 is located.

[0078] like Fig. 9 and 10As shown, an embodiment of the switching push plate 3 is shown: the switching push plate 3 includes a push plate main board, a push plate limiting foot 31, a push plate guide rib 36, a push plate passive shoulder 32 and a push plate driving platform 33, the push plate limiting foot 31 and the push plate guide rib 36 are arranged on one side of the push plate main board, a first locking groove 34 and a second locking groove 35 are arranged side by side at an edge of one side of the push plate main board, and the push plate passive shoulder 32 and the push plate driving platform 33 are arranged on the edge of the other side of the push plate main board.

[0079] Preferably, Fig. 9 and 10 As shown, the push plate actuated shoulder 32 includes a push plate actuated surface 32-0 and a push plate locking surface 32-1 connected by bending, the push plate actuated surface 32-0 is perpendicular to the moving direction of the switching push plate 3, and the angle between the push plate locking surface 32-1 and the push plate actuated surface 32-0 is an obtuse angle. Fig. 9 and 10 As shown, the push plate locking surface 32 - 1 is formed by a chamfered structure at one end of the push plate active shoulder 32 .

[0080] Preferably, Fig. 9 As shown, the push plate limit foot 31 is an overall T-shaped structure, including a first limit foot section 31-0 and a second limit foot section 31-1, and both ends of the second limit foot section 31-1 are respectively connected to the switching push plate 3 and the first limit foot section 31-0, and the outer diameter of the first limit foot section 31-0 is larger than the outer diameter of the second limit foot section 31-1, and the outer diameter of the first limit foot section 31-0 is larger than the track hole travel section 11-1 of the track hole 11.

[0081] Preferably, Figure 1 As shown, the switching push plate 3 also includes a push plate operating handle arranged on the other side thereof.

[0082] like Fig.11 and 12 As shown in FIG. 1 , an embodiment of the locking mechanism 4 is shown: the locking mechanism 4 comprises a rotatably arranged locking body 43, the locking body 43 comprises a slider locking finger 43-2 arranged at one axial end thereof, and a driving arm 43-0 and a button locking strip 43-1 respectively arranged on the radial side walls of the locking body 43. Further, as Fig.11 and 12 As shown, the locking mechanism 4 further includes a lock core 41 and a lock sleeve 42. The lock core 41 is rotatably disposed in the lock sleeve 2. The locking body 43 is connected to the lock core and rotates synchronously. The lock sleeve 42 is disposed on the first bracket 1 and is limitedly matched therewith.

[0083] Preferably, Figure 8 As shown, the first bracket 1 includes a lock installation hole arranged thereon, and the lock sleeve 42 is inserted into the lock installation hole. Fig.11As shown, a lock sleeve limiting platform 421 is provided on the side wall of the lock sleeve 42, and a lock sleeve limiting groove 12 is provided on the side wall of the lock installation hole, and the lock sleeve limiting platform 421 and the lock sleeve limiting groove 12 are limitedly matched.

[0084] Preferably, Fig.12 As shown, the driving arm 43-0 includes a first limiting groove 43-01 and a second limiting groove 43-02 arranged side by side and spaced apart at one end thereof, and a middle limiting protrusion 43-03 formed between the first limiting groove 43-01 and the second limiting groove 43-02.

[0085] Preferably, Figure 5 and 6 As shown, the locking mechanism 4 further includes a key 6 used in conjunction with the lock cylinder 41 .

[0086] like Figure 16-19 FIG. 1 is an embodiment of the installation structure of the circuit breaker of the present invention.

[0087] like Fig.17 and 19 As shown, the mounting structure of the circuit breaker of the present invention comprises a mounting plate 2a and a guide rail 1a, the circuit breaker 3a is fixedly arranged on the mounting plate 2a, and the mounting plate 2a is fixedly arranged on the guide rail 1a.

[0088] Preferably, Figure 15-18 As shown, the installation structure of the circuit breaker of the present invention also includes multiple groups of first positioning structures, and the circuit breaker 3a and the installation plate 2a are limited and matched through the first positioning structures. Figure 15-18 As shown, each group of the first positioning structures includes a positioning protrusion 201a and a positioning groove 31a used in conjunction with each other; in the same group of the positioning protrusion 201a and the positioning groove 31a, one is arranged on the mounting plate 2a, and the other is arranged on the circuit breaker 3a.

[0089] Specifically, Fig.15 and 16 As shown, the positioning protrusion 201a is arranged on the mounting plate 2a, and the positioning groove 31a is arranged on the circuit breaker 3a.

[0090] Preferably, Fig.15 and 16 As shown, the mounting plate 2a includes a bearing portion 20-21a and a connecting portion 22a. The cross section of the bearing portion 20-21a is a U-shaped structure, including a bottom plate 20a and a side plate 21a. The bottom plate 20a and the connecting portion 22a are respectively connected to the two ends of the side plate 21a and are respectively bent to the sides of the side plate 21a; Fig.16 and 19As shown, the circuit breaker 3a is arranged in the bearing part 20-21a and fixedly connected to the bottom plate 20a, the two connecting parts 22a are respectively connected to two parallel and spaced guide rails 1a, and the bearing part 20-21a is located between the two guide rails 1a.

[0091] Preferably, Figure 1 As shown, the connecting portion 22a includes a plurality of connecting arms 220a arranged side by side and spaced apart from each other. A U-shaped connecting groove 221a is provided in the middle of each connecting arm 220a. A connecting screw 4a passes through the connecting groove 221a to fix the connecting arm 220a to the guide rail 1a.

[0092] Preferably, Fig.15 and 18 As shown, the base plate 20a is provided with a plurality of first connection holes 200a, and the circuit breaker 3a is provided with a plurality of second connection holes 30a corresponding to the first connection holes 200a, and the mounting screws pass through the first connection holes 200a and the second connection holes 30a to fix the mounting plate 2a and the circuit breaker 3a.

[0093] Preferably, Figure 1 As shown, the mounting plate 2a further includes a plurality of weight-reducing holes 202a arranged on the bottom plate 20a.

[0094] like Fig.15 and 16 As shown, it is an embodiment of the mounting plate 2a: the mounting plate 2a includes a bearing portion 20-21a and a connecting portion 22a; the cross section of the bearing portion 20-21a is a U-shaped structure, including a bottom plate 20a and two side plates 21a, the bottom plate 20a and the connecting portion 22a are respectively connected to the two ends of the side plate 21a and are respectively bent to the two sides of the side plate 21a; each of the connecting portions 22a includes two connecting arms 220a arranged side by side and spaced apart, respectively abutting against the two ends of the bottom plate 20a; four positioning protrusions 201a are provided on the bottom plate 20a, respectively located at the four inner corners of the bottom plate 20a, and four first connecting holes 200a are also provided on the bottom plate 20a, and each two first connecting holes 200a form a group, and are arranged side by side and spaced apart at the same end of the bottom plate 20a (such as Fig.15 In the direction shown, between the two positioning protrusions 201a at the upper end or the lower end of the bottom plate 20a. Further, as Fig.15 As shown, the bottom plate 20a is further provided with a plurality of weight-reducing holes 202a.

[0095] Preferably, Fig.15 and 16 As shown, the guide rail 1a is a long strip structure, and a guide rail slot is provided in the middle of the side wall facing the circuit breaker 3a. The cross section of the guide rail 1a is a square frame structure. The connecting screws 4a pass through the guide rail slot and the mounting plate 1a to fix the guide rail 1a and the mounting plate 2a.

[0096] Preferably, Fig.19 As shown, the direction from the incoming end to the outgoing end of the circuit breaker is the same as the extending direction of the guide rail 1a.

[0097] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. An electric operating device for a circuit breaker, comprising a first bracket (1), and a switching push plate (3), a locking mechanism (4) and a slider (203) respectively arranged on the first bracket (1); the slider (203) is driven and matched with an operating handle of the circuit breaker, and the slider (203) reciprocates to drive the circuit breaker to close / open; when the switching push plate (3) is in a first position, the electric operating device is switched to a manual working state and the power circuit and / or signal circuit of the electric operating device driven by the switching push plate (3) is disconnected; when the switching push plate (3) is in a second position and the locking mechanism (4) is in an unlocked state, the electric operating device is switched to an automatic working state and the power circuit and / or signal circuit of the electric operating device is connected; characterized in that: The switching push plate (3) is located at the second position, and when the locking mechanism (4) switches from the unlocked state to the locked state, the locking mechanism (4) locks the switching push plate (3) and simultaneously drives the power circuit and / or signal circuit of the electric operating device to be disconnected; When the switching push plate (3) is located at the first position and the locking mechanism (4) is switched from the unlocked state to the locked state, the locking mechanism (4) drives the switching push plate (3) to move from the first position to the second position and locks the switching push plate (3), and at the same time, the locking mechanism (4) drives the power supply circuit and / or signal circuit of the electric operating device to be disconnected.

2. The electric operating device for circuit breaker according to claim 1, characterized in that: The locking mechanism (4) switches between an unlocked state and a locked state by rotating itself.

3. The electric operating device for circuit breaker according to claim 2, characterized in that: The electric operating device further comprises a first switch component (5); when the switching push plate (3) is located at the first position, the first switch component (5) is driven to switch to the first working state, so that the power circuit or the signal circuit of the electric operating device is disconnected; when the switching push plate (3) is located at the second position and the locking mechanism (4) is in the unlocked state, the first switch component (5) is switched to the second working state, and the power circuit or the signal circuit of the electric operating device is connected; when the locking mechanism (4) is switched to the locked state, the first switch component (5) is driven to switch to the first working state; when the locking mechanism (4) is switched to the unlocked state, the first switch component (5) is switched to the second working state.

4. The electric operating device for circuit breaker according to claim 3, characterized in that: The first switch element (5) is a micro switch, comprising a first reed (51); when the switching push plate (3) is located at the first position or the second position, the first reed (51) is pressed or released respectively; when the locking mechanism (4) is in a locked state or an unlocked state, the first reed (51) is pressed or released respectively.

5. The electric operating device for circuit breaker according to claim 3, characterized in that: The locking mechanism (4) comprises a driving arm (43-0); when the locking mechanism (4) is switched to a locked state, the locking mechanism (4) drives the first switch member (5) to switch to a second working state, and the driving arm (43-0) is limitedly matched with the first bracket (1).

6. The electric operating device for circuit breaker according to claim 5, characterized in that: The first bracket (1) comprises a bracket limiting arm (19), and the driving arm (43-0) and the bracket limiting arm (19) are matched in a limiting manner through a tooth groove structure.

7. The electric operating device for circuit breaker according to claim 5, characterized in that: The switching push plate (3) comprises a push plate actuated shoulder (32); when the locking mechanism (4) switches from an unlocked state to a locked state, the driving arm (43-0) drives the switching push plate (3) to move from a first position to a second position via the push plate actuated shoulder (32).

8. The electric operating device for circuit breaker according to claim 7, characterized in that: The push plate actuated shoulder (32) comprises a push plate actuated surface (32-0) and a push plate locking surface (32-1) which are connected by bending. The driving arm (43-0) drives the switching push plate (3) to move via the push plate actuated surface (32-0). The driving arm (43-0) and the push plate locking surface (32-1) are limitedly matched to lock the switching push plate (3).

9. The electric operating device for circuit breaker according to claim 1, characterized in that: The locking mechanism (4) further comprises a slider locking finger (43-2). When the locking mechanism (4) is switched to a locked state, the slider locking finger (43-2) cooperates with the slider (203) to prevent the slider from moving in the closing direction.

10. The electric operating device for circuit breaker according to claim 1, characterized in that: The circuit breaker further comprises a test button (7), the locking mechanism (4) comprises a button locking strip (43-1), the test button (7) comprises a button limit platform (70) arranged on one side thereof, and when the locking mechanism (4) is switched to a locked state, the button locking strip (43-1) moves to one side of the button limit platform (70) to cooperate with the limit platform (70) to prevent the test button (7) from moving.

11. The electric operating device for circuit breaker according to claim 1, characterized in that: The first bracket (1) comprises a push plate locking arm (13), and the push plate locking arm (13) comprises a push plate locking tooth; the switching push plate (3) comprises a first locking groove (34) and a second locking groove (35); when the switching push plate (3) is located in a first position, the push plate locking tooth cooperates with the first locking groove (34) in a limiting manner; when the switching push plate (3) is located in a second position, the push plate locking tooth cooperates with the second locking groove (35) in a limiting manner.

12. The electric operating device for circuit breaker according to claim 2, characterized in that: The locking mechanism (4) comprises a rotatably arranged locking body (43), wherein the locking body (43) comprises a slider locking finger (43-2) arranged at one axial end thereof, and a driving arm (43-0) and a button locking strip (43-1) respectively arranged on the radial side walls of the locking body (43).

13. The electric operating device for circuit breaker according to claim 12, characterized in that: The driving arm (43-0) comprises a first limiting groove (43-01) and a second limiting groove (43-02) arranged side by side and at intervals on one end thereof, and an intermediate limiting protrusion (43-03) formed between the first limiting groove (43-01) and the second limiting groove (43-02); the first bracket (1) comprises a bracket limiting arm (19), and the bracket limiting arm (19) comprises a first limiting protrusion (14) and a second limiting protrusion (15) arranged side by side and at intervals. 15), and an intermediate limiting groove (14-15) formed between the first limiting protrusion (14) and the second limiting protrusion (15); the first limiting protrusion (14), the second limiting protrusion (15), and the intermediate limiting groove (14-15) are respectively limitedly matched with the first limiting groove (43-01), the second limiting groove (43-02), and the intermediate limiting protrusion (43-03), and the intermediate limiting protrusion (43-03) is also locked with the switching push plate (3).

14. The electric operating device for circuit breaker according to claim 12, characterized in that: The locking mechanism (4) further comprises a lock core (41) and a lock sleeve (42); the lock core (41) is rotatably arranged in the lock sleeve (42); the locking body (43) is connected to the lock core (41) and rotates synchronously; the lock sleeve (42) is arranged on the first bracket (1) and cooperates with the first bracket (1) in a limiting manner.

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