Electric operating device of 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, comprising a first bracket, a test button, and a slider arranged on the first bracket; the slider is driven and cooperates with an operating handle of the circuit breaker, and the slider reciprocates to drive the circuit breaker to close / open; after the slider drives the circuit breaker to open, the slider cooperates with the test button to prevent the test button from moving; the electric operating device for the circuit breaker of the present invention prevents the circuit breaker from being tripped by the test button after the circuit breaker is opened.

Description

Technical Field

[0001] The present 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 deficiencies:

[0003] First, the electric operating device is often equipped with a push plate for manual / automatic switching and a locking mechanism to lock the electric operating device in a specific state to prevent accidental operation. However, in existing circuit breakers, the push plate and the locking mechanism are two independent structures with different 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 manually, posing 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, which prevents the circuit breaker from being tripped by a test button after the circuit breaker is opened.

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

[0007] An electric operating device for a circuit breaker includes a first bracket 1, a test button 7, and a slider 203 disposed on the first bracket 1; the slider 203 is driven and engaged with the operating handle of the circuit breaker, and the slider 203 reciprocates to drive the circuit breaker to close / open; after the slider 203 drives the circuit breaker to open, the slider 203 and the test button 7 are limited and engaged to prevent the test button 7 from moving.

[0008] Preferably, 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 7 from moving.

[0009] Preferably, the first bracket 1 also includes a locking mechanism 4, the locking mechanism 4 includes a button locking strip 43-1, and the test button 7 includes a button limit platform 70 arranged 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 limit platform 70 and cooperates with its limit to prevent the movement of the test button 7.

[0010] Preferably, the first bracket 1 also includes a switching push plate 3. When the switching push plate 3 is in the first position, the electric operating device switches to the manual working state and the power circuit and / or signal circuit driven by the switching push plate 3 is disconnected. When the switching 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.

[0011] Preferably, the first bracket 1 further includes a locking mechanism 4, and the switching push plate 3 is in the second position. 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;

[0012] When the switching push plate 3 is in 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. At the same time, the locking mechanism 4 drives the power circuit and / or signal circuit of the electric operating device to be disconnected.

[0013] 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 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.

[0014] Preferably, the first bracket 1 further includes a locking mechanism 4. When the locking mechanism 4 is switched to the locked state, the locking mechanism 4 cooperates with the slider 203 to prevent it from moving in the closing direction.

[0015] 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.

[0016] Preferably, the electric operating device further includes a first switch element 5, and when the locking mechanism 4 switches to the locked state, the first switch element 5 is driven to switch to the first working state; when the locking mechanism 4 switches to the unlocked state, the first switch element 5 switches to the second working state.

[0017] Preferably, 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 the driving arm 43 - 0 is limitedly matched with the first bracket 1 .

[0018] Preferably, the first bracket 1 includes a bracket limiting arm 19, and the driving arm 43-0 and the bracket limiting arm 19 are limited and matched through a tooth-groove structure.

[0019] In the electric operating device of the circuit breaker of the present invention, after the slider 203 drives the circuit breaker to open, the slider 203 cooperates with the test button 7 to prevent the test button 7 from moving, thereby avoiding the circuit breaker tripping due to accidental touching of the test button after the circuit breaker is opened. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 2 is a schematic structural diagram of the electric operating device of the circuit breaker of the present invention, wherein 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;

[0021] Figure 2 This invention Figure 1 A schematic diagram of the enlarged structure of part A;

[0022] Figure 3 This invention Figure 1 A schematic diagram of the enlarged structure of part B;

[0023] Figure 4 2 is a schematic structural diagram of the electric operating device of the circuit breaker of the present invention, wherein 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;

[0024] Figure 5 Schematic diagram of the structure of the electric operating device of the circuit breaker of the present invention, the locking mechanism switches 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;

[0025] Figure 6 2 is a schematic structural diagram of the electric operating device of the circuit breaker of the present invention, wherein the switch push plate is in the second position, and the locking mechanism is in a locked state and locked with the switch push plate;

[0026] Figure 7 This invention Figure 6 Schematic diagram of the enlarged structure of part C;

[0027] 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;

[0028] Figure 9 This 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;

[0029] Figure 10 2 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;

[0030] Figure 11 It is a structural schematic diagram of the locking mechanism of the present invention;

[0031] Figure 12 is a schematic structural diagram of the locking mechanism of the present invention, showing the structure of the locking arm;

[0032] Figure 13 It is a structural diagram of the cooperation between the locking mechanism and the slider;

[0033] Figure 14 It is a structural diagram of the locking mechanism and the test button;

[0034] Figure 15 It is a schematic diagram of the front projection structure of the mounting plate;

[0035] Figure 16 It is a schematic diagram of the side projection structure of the mounting plate;

[0036] Figure 17 This is a schematic diagram of the result of the cooperation between the mounting plate and the guide rail;

[0037] Figure 18 is a schematic structural diagram of a circuit breaker, showing a positioning slot and a second connection hole;

[0038] Figure 19 It is a structural diagram of the circuit breaker, mounting plate and guide rail. DETAILED DESCRIPTION

[0039] The following is combined with Figure 1-19 The following embodiments further illustrate the specific implementation of the electric operating mechanism and mounting structure of the circuit breaker of the present invention. The electric operating mechanism and mounting structure of the circuit breaker of the present invention are not limited to the description of the following embodiments.

[0040] like Figure 1 、 4-6, 13, the electric operating device of the circuit breaker of the present invention includes 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 by 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; 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 connected; when the switching 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 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 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 circuit and / or signal circuit of the electric operating device to be disconnected.

[0041] The electric operating device of the circuit breaker of the present invention can disable the manual and automatic operating states 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 operating state or the automatic operating state. This improves the convenience of operation and avoids the situation that may occur in the prior art where the electric operating state of the electric operating device is disabled by the locking mechanism but the circuit breaker can be manually closed, thereby improving the safety of electricity use.

[0042] 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 can the electric operating device enter the automatic working state. If either of them is disconnected, the automatic working state is prohibited.

[0043] Preferably, Figure 1 、 4 As shown in FIG. 6 , the locking mechanism 4 switches between the unlocked state and the locked state by rotating itself.

[0044] Preferably, Figure 1 、 4-6, the electric operating device further includes a first switch 5; when the switching 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 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; 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 member 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 the locked state or the unlocked state, it presses or releases the first reed 51 respectively.

[0045] Preferably, Figure 13 As shown, when the locking mechanism 4 is switched to the locked state, the locking mechanism 4 cooperates with the slider 203 to prevent it from moving in the closing direction, thereby achieving reliable locking of the electric operating device, so that the user cannot operate the electric operating device to close the circuit breaker either electrically or manually (because both the electric and manual modes require the slider 203 to move back and forth to drive the circuit breaker to close / open). Figure 13 As 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.

[0046] Preferably, Figure 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 bar 43-1. When the locking mechanism 4 is switched to the locked state, the button locking bar 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.

[0047] Preferably, Figure 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. Figure 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.

[0048] Preferably, pressing the test button 7 closes the moving contact and the static contact of the circuit breaker. When the circuit breaker is opened, the locking mechanism 4 and / or the slider 203 cooperates with the test button 7 to limit the position, thereby preventing the user from mistakenly operating the test button 7 to close the moving contact and the static contact of the circuit breaker when the electric operating device is locked, thereby further improving the safety of electricity use.

[0049] Preferably, Figure 13 and 14 As shown, the electric operating device of the circuit breaker of the present invention further includes a test button 7, which is pressed to trip the circuit breaker; 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 being tripped due to pressing the test button 7.

[0050] Preferably, Figure 1 、 3 As shown in Figures 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.

[0051] 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, wherein the circuit breaker 3a is fixedly mounted on the mounting plate 2a, and the mounting plate 2a is fixedly mounted on the guide rail 1a. The circuit breaker mounting structure of the present invention has a simple structure and is easy to assemble.

[0052] Preferably, Figure 15 、 16 As shown in FIG. 18 , the mounting structure further includes a first positioning structure, and the circuit breaker 3a and the mounting plate 2a are limited and matched by the first positioning structure. Figure 15 、 16 As shown in Figures 18 and 19, each set of the first positioning structures includes a positioning protrusion 201a and a positioning groove 31a. Within the same set of positioning protrusions 201a and positioning grooves 31a, one is provided on the mounting plate 2a, and the other is provided on the circuit breaker 31a. This first positioning structure facilitates improved accuracy and efficiency in the assembly of the circuit breaker 3a and the mounting plate 2a.

[0053] Preferably, Figure 16As shown, the mounting plate 2a includes a load-bearing portion 20-21a and a connecting portion 22a. The load-bearing portion 20-21a is a U-shaped structure, comprising a base plate 20a and side plates 21a. The base plate 20a and the connecting portion 22a are respectively connected to the two ends of the side plates 21a and are bent toward the sides of the side plates 21a. The circuit breaker 3a is disposed within the load-bearing portion 20-21a and fixedly connected to the base plate 20a. The two connecting portions 22a are respectively connected to two parallel, spaced-apart guide rails 1a, with the load-bearing portion 20-21a located between the two guide rails 1a. The above-described arrangement of the mounting plate 2a, circuit breaker 3a, and guide rails 1a facilitates closer contact between the circuit breaker 3a and the mounting base of the meter box, ensuring that the circuit breaker 3a meets the thickness requirements of the meter box.

[0054] The electric operating device for the circuit breaker of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0055] like Figure 1 、 4 As shown in Figures 6 and 13, the electric operating device of the circuit breaker of the present invention includes 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; 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 electric operating device driven by the switch push plate 3 is disconnected; Figure 1 As shown, when the switching 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 switching 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 switching push plate 3 and drives the power circuit and / or signal circuit of the electric operating device to be disconnected; Figure 4-6 As shown, the switching push plate 3 is 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.

[0056] It should be pointed out that Figure 13As shown, the electric operating device of the circuit breaker of the present invention also includes a main shaft 2, a cam assembly provided at one end of the main shaft 2, a motor and a gear set, and a slider track; an operating hole 21 is provided at the other end of the main shaft 2, and when the switch push plate 3 is in the first position, the operating hole 21 is avoided; when the switch push plate 3 is in the second position, the operating hole 21 is blocked; the motor is driven and cooperated with the main shaft 2 through the gear set, and the slider 203 is slidably provided on the slider track. The main shaft 2 is driven and cooperated with the slider 203 through the cam assembly, driving the slider 203 to slide back and forth.

[0057] Preferably, Figure 1 、 4 As shown in FIG. 6 , the locking mechanism 4 switches between the unlocked state and the locked state by rotating itself.

[0058] 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 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 5 is driven to switch to the first working state; Figure 1 and 4 As shown, when the locking mechanism 4 switches to the unlocked state, the first switch member 5 switches to the second working state. Figure 1 、 4 -6, the first switch member 5 is a micro switch, including a first reed 51; when the switching push plate 3 is in the first position / second position, it presses / releases the first reed 51; when the locking mechanism 4 is in the locked state / unlocked state, it presses / releases the first reed 51.

[0059] 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.

[0060] Specifically, such as Figure 1 and 4 As shown in the direction, the switch push plate 3 moves left and right to switch between the first position and the second position; Figure 1 、 4As shown in FIG6 , the locking mechanism 4 can switch between the locked state and the unlocked state by rotating itself in the clockwise and counterclockwise directions; 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 to the right (from the first position to the second position), as shown in FIG. Figure 6 As shown, the locking mechanism 4 switches to the locked 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 51 of the first switch member 5 to cut off the power circuit or signal circuit of the electric operating device.

[0061] 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 to limit the first bracket 1. 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. Figure 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.

[0062] Preferably, Figure 1 、 3 As 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 limiting 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 and the bracket limiting arm 19 complete the limiting cooperation, and the bracket limiting arm 19 is completely reset or partially reset to form a stable limiting cooperation between the driving arm 43 and the bracket limiting arm 19, so that the locking mechanism 4 can be reliably and stably maintained in the locked state.

[0063] Preferably, Figure 1 、 4 -6, 9-10, the switching push plate 3 further includes a push plate driving platform 33. When the switching push plate 3 moves to the first position, the push plate driving boss 33 drives and cooperates with the first reed 51 of the first switch member 5, so that the first switch member 5 switches to the first working state. Figure 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.

[0064] Preferably, Figure 1 、 4 -6, 9, 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. Figure 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 that are connected by bending. The driving arm 43-0 drives the switch push plate 3 to move through the push plate actuated surface 32-0. The driving arm 43-0 and the push plate locking surface 32-1 limit the position and 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 push plate locking surface 32-1 to lock the switching push plate 3. 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 limiting protrusion 43-03 is parallel to the push plate locking surface 32-1 and is in limiting cooperation.

[0065] Preferably, Figure 1 、 2 As 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 switching push plate 3 includes a first locking groove 34 and a second locking groove 35. 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. 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 switching push plate 3 can be reliably and stably maintained in the first position or the second position, and avoids the switching push plate 3 from being easily changed in position due to vibration or accidental touch, which affects the normal operation of the electric operating device. Further, as Figure 10As 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 .

[0066] Preferably, Figure 8 As shown, the first bracket 1 includes a track hole 11 and a track groove 18; Figure 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; Figure 9 As shown, the push plate limiting foot 31 and the push plate guide rib 36 are arranged on the same side of the switching 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 provided 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; Figure 9 As shown, the push plate limit foot 31 is a T-shaped structure as a whole, including a first section 31-0 of the limit foot and a second section 31-1 of the limit foot. The two ends of the second section 31-1 of the limit foot are respectively connected to the switching push plate 3 and the first section 31-0 of the limit foot. The outer diameter of the first section 31-0 of the limit foot is larger than the outer diameter of the second section 31-1 of the limit foot, and the outer diameter of the first section 31-0 of the limit foot is larger than the outer diameter of the second section 31-1 of the limit foot, and the outer diameter of the first section 31-0 of the limit foot is larger than the track hole stroke section 11-1.

[0067] Preferably, Figure 13 As shown, 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. Figure 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).

[0068] Preferably, Figure 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. Figure 13 and 14As shown, the locking mechanism 14 includes a button locking strip 43-1, and the test button 7 includes a button limiter 70 provided on one side thereof. When the locking mechanism 4 is switched to the locked state, the button locking strip 43-1 moves to the 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 shown in FIG. Figure 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 and cooperates with the limit platform 70 to prevent the test button 7 from moving downward when it is pressed.

[0069] Preferably, Figure 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. Figure 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.

[0070] Preferably, pressing the test button 7 closes the moving contact and the static contact of the circuit breaker.

[0071] Preferably, the circuit breaker is tripped by pressing the test button 7. Further, the circuit breaker includes an operating mechanism, the operating mechanism includes 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.

[0072] like Figure 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 engaged with it, 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.

[0073] Preferably, Figure 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.

[0074] like Figure 9 and 10 As shown, an embodiment of the switching push plate 3 is provided: 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, and a first locking groove 34 and a second locking groove 35 are provided 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.

[0075] Preferably, Figure 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 a bend. 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. Figure 9 and 10 As shown, the push plate locking surface 32 - 1 is formed by the chamfered structure at one end of the push plate active shoulder 32 .

[0076] Preferably, Figure 9 As shown, the push plate limit foot 31 is a T-shaped structure as a whole, including a first section 31-0 of the limit foot and a second section 31-1 of the limit foot. The two ends of the second section 31-1 of the limit foot are respectively connected to the switching push plate 3 and the first section 31-0 of the limit foot. The outer diameter of the first section 31-0 of the limit foot is larger than the outer diameter of the second section 31-1 of the limit foot, and the outer diameter of the first section 31-0 of the limit foot is larger than the track hole travel section 11-1 of the track hole 11.

[0077] Preferably, Figure 1 As shown, the switching push plate 3 also includes a push plate operating handle arranged on the other side thereof.

[0078] like Figure 11 and 12 FIG. 4 shows an embodiment of the locking mechanism 4: the locking mechanism 4 comprises a rotatably arranged locking body 43, the locking body 43 comprising 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. Figure 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 arranged in the lock sleeve 2. The locking body 43 is connected to the lock core and rotates synchronously. The lock sleeve 42 is arranged on the first bracket 1 and is limitedly matched therewith.

[0079] Preferably, Figure 8 As shown, the first bracket 1 includes a lock mounting hole provided thereon, and the lock sleeve 42 is inserted into the lock mounting hole, as shown in FIG. Figure 11 As 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. The lock sleeve limiting platform 421 and the lock sleeve limiting groove 12 are limited and matched.

[0080] Preferably, Figure 12As 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.

[0081] Preferably, Figure 5 and 6 As shown, the locking mechanism 4 further includes a key 6 used in conjunction with the lock cylinder 41 .

[0082] like Figure 16-19 FIG. 1 shows an embodiment of the installation structure of the circuit breaker of the present invention.

[0083] like Figure 17 and 19 As shown, the mounting structure of the circuit breaker of the present invention includes 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.

[0084] Preferably, Figure 15-18 As shown, the mounting structure of the circuit breaker of the present invention further includes multiple sets of first positioning structures, and the circuit breaker 3a and the mounting 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 set on the mounting plate 2a, and the other is set on the circuit breaker 3a.

[0085] Specifically, such as Figure 15 and 16 As shown, the positioning protrusion 201a is provided on the mounting plate 2a, and the positioning groove 31a is provided on the circuit breaker 3a.

[0086] Preferably, Figure 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; Figure 16 and 19 As shown, 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.

[0087] Preferably, Figure 1As shown, the connecting portion 22a includes a plurality of connecting arms 220a arranged side by side and spaced apart. A U-shaped connecting groove 221a is provided in the middle of each connecting arm 220a. The connecting screw 4a passes through the connecting groove 221a to fix the connecting arm 220a to the guide rail 1a.

[0088] Preferably, Figure 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. 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.

[0089] Preferably, Figure 1 As shown, the mounting plate 2a further includes a plurality of weight-reducing holes 202a provided on the bottom plate 20a.

[0090] like Figure 15 and 16 As shown, an embodiment of the mounting plate 2a is 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 two side plates 21a, the bottom plate 20a and the connecting portion 22a are respectively connected to the two ends of the side plates 21a and are respectively bent to the two sides of the side plates 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, each two first connecting holes 200a are set in a group, and are arranged side by side and spaced apart at the same end of the bottom plate 20a (such as Figure 15 In the direction shown, between the two positioning protrusions 201a at the upper end or lower end of the bottom plate 20a. Figure 15 As shown, the bottom plate 20a is further provided with a plurality of weight-reducing holes 202a.

[0091] Preferably, Figure 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.

[0092] Preferably, Figure 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.

[0093] The above is a further detailed description of the present invention in conjunction with specific preferred embodiments, and the specific implementation of the present invention should not be considered to be limited to these descriptions. For those skilled in the art of the present invention, without departing from the concept of the present invention, several simple deductions or substitutions can be made, which should be considered to fall within the scope of protection of the present invention.

Claims

1. An electric operating device for a circuit breaker, comprising a main shaft (2), a cam assembly arranged at one end of the main shaft (2), a motor, a gear set, a first bracket (1), a test button (7), and a slider (203) arranged on the first bracket (1); the motor is driven and matched with the main shaft (2) through the gear set, the main shaft (2) is driven and matched with the slider (203) through the cam assembly, 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; pressing the test button (7) closes the moving contact and the static contact of the circuit breaker, or pressing the test button 7 trips the circuit breaker; the characteristics are: After the slider (203) drives the circuit breaker to open, the slider (203) and the test button (7) are limitedly matched to prevent the test button (7) from moving.

2. The electric operating device for a circuit breaker according to claim 1, characterized in that: 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 (7) from moving.

3. The electric operating device for a circuit breaker according to claim 1 or 2, characterized in that: The first bracket (1) further comprises a locking mechanism (4), the locking mechanism (4) comprising a button locking strip (43-1), the test button (7) comprising a button limiting 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 limiting platform (70) to engage with the limiting platform, thereby preventing the test button (7) from moving.

4. The electric operating device for a circuit breaker according to claim 1 or 2, characterized in that: The first bracket (1) further comprises a switching push plate (3); when the switching push plate (3) is in a first position, the electric operating device switches to a manual operating state and the power circuit and / or signal circuit driven by the switching push plate (3) are disconnected; when the switching push plate (3) is in a second position, the electric operating device switches to an automatic operating state and the power circuit and / or signal circuit of the electric operating device are connected.

5. The electric operating device for a circuit breaker according to claim 4, characterized in that: The first bracket (1) further includes a locking mechanism (4); when the switching push plate (3) is in the second position and the locking mechanism (4) is in the unlocked state, 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; when the switching push plate (3) is in the second position and 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 turned off; When the switching push plate (3) is located in 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.

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

7. The electric operating device for a circuit breaker according to claim 1 or 2, characterized in that: The first bracket (1) further comprises a locking mechanism (4); when the locking mechanism (4) is switched to a locked state, the locking mechanism (4) and the slider (203) cooperate in a limiting manner to prevent the slider from moving in a closing direction.

8. The electric operating device for a circuit breaker according to claim 7, 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 it from moving in the closing direction.

9. The electric operating device for a circuit breaker according to claim 8, characterized in that: The electric operating device further comprises a first switch member (5), which drives the first switch member (5) to switch to a first working state when the locking mechanism (4) switches to a locked state; and drives the first switch member (5) to switch to a second working state when the locking mechanism (4) switches to an unlocked state.

10. The electric operating device for a circuit breaker according to claim 9, characterized in that: The locking mechanism (4) includes a driving arm (43-0). When the locking mechanism (4) switches 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 in position-limiting cooperation with the first bracket (1).

11. The electric operating device for a circuit breaker according to claim 10, 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.

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