Operating system and control and protection switch

Abstract

The utility model relates to the field of low-voltage electric appliances, in particular to an operating system and a control and protection switch comprising the operating mechanism. In the operating system, when an operating mechanism is switched on, a transmission rod rotates along a direction d2 to enable a moving contact mechanism to move to a switching-on position and drive a transmission arm to move to a position p1 to enable an energy storage torsion spring to store energy; when the operating mechanism is switched off, the energy storage torsion spring releases energy and is used for driving the transmission rod to rotate along a direction d1 through the transmission arm so as to drive the moving contact mechanism to move to a switched-off position, and meanwhile, the transmission arm moves to a position p2; the direction d1 and the direction d2 are opposite to each other; in the process that the transmission arm moves from the position p2 to the position p1 or from the position p1 to the position p2, the push rod triggers the control switch to connect or disconnect the power supply circuit of the control module; the power supply circuit of the control module is switched off when the operating mechanism is switched off, and the service life of the control module is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of low-voltage electrical apparatus, and particularly relates to an operating system and a control and protection switch comprising the operating system. BACKGROUND

[0002] A motor circuit breaker is an electrical component specially used for motor protection, mainly used for cutting off the circuit when the motor fails to avoid damage caused by motor overload, overheating, etc. The motor circuit breaker comprises an operating system and a contact system closed and opened under the control of the operating system. The operating system comprises an operating mechanism, a breaking electromagnet and a control module. The operating personnel can control the closing and opening of the motor circuit breaker through the operating mechanism. The control module drives the contact system to open through the breaking electromagnet after receiving the control signal.

[0003] The existing motor circuit breaker has a control module that is kept in a power supply state for a long time, which is prone to damage. SUMMARY

[0004] The utility model discloses a kind of operating systems and a control and protection switch comprising the operating system, which can disconnect the power supply circuit of control module when operating mechanism opens, prolong the service life of control module.

[0005] To achieve the above object, the utility model adopts the following technical scheme:

[0006] An operating system comprises an operating mechanism, a control module and a breaking electromagnet driven by the control module, the operating mechanism comprises an energy storage torsion spring, a fixedly arranged support and a transmission rod rotatably arranged on the support, two spring arms of the energy storage torsion spring are a transmission arm rotatably connected with the transmission rod and a pivot arm rotatably connected with the support; when the operating mechanism is closed, the transmission rod is rotated along direction d2 to make the movable contact mechanism move to a closed position and drive the transmission arm to move to position p1 to store energy in the energy storage torsion spring; when the operating mechanism is opened, the energy storage torsion spring releases energy to drive the transmission rod to rotate along direction d1 through the transmission arm to drive the movable contact mechanism to move to an open position, and the transmission arm moves to position p2; the direction d1 and the direction d2 are opposite directions; the breaking electromagnet is driven to move the movable contact mechanism to the open position;

[0007] The operating system further comprises a push rod linked with the transmission arm and a control switch connected in series in the power supply circuit of the control module; during the movement of the transmission arm from position p2 to position p1, the push rod triggers the control switch to turn on the power supply circuit of the control module; or, during the movement of the transmission arm from position p1 to position p2, the push rod triggers the control switch to turn off the power supply circuit of the control module.

[0008] Further, the push rod is linearly movable, one end of the push rod is in transmission cooperation with the transmission arm and the other end of the push rod is used for triggering the control switch.

[0009] Further, the operating system further comprises a push rod reset member in transmission cooperation with the push rod; when the transmission arm moves from the position p2 to the position p1, the push rod stores energy in the push rod reset member; when the transmission arm moves from the position p1 to the position p2, the transmission arm avoids the push rod, the push rod reset member releases energy and drives the push rod to reset.

[0010] Further, the push rod is linearly movable, one end of the push rod abuts against one end of the transmission arm connected with the transmission rod in rotation and the other end of the push rod is used for triggering the control switch.

[0011] Further, the push rod reset member is a linear compression spring, the linear compression spring and the transmission arm are respectively located at two sides of the push rod in the moving direction of the push rod and act on two ends of the push rod.

[0012] Further, the breaking electromagnet, the push rod and the operating mechanism are sequentially and side by side arranged along a direction d3; the push rod reset member and the control switch are side by side arranged along a direction d5; the push rod is movably arranged along a direction d4; the direction d3, the direction d4 and the direction d5 are perpendicular to each other.

[0013] Further, the push rod comprises a push rod driven part, a push rod main body and a push rod triggering part, one end of the push rod driven part is connected with the push rod main body in perpendicular and the other end of the push rod driven part is used for abutting against the transmission arm, the push rod triggering part is arranged on the push rod main body and is used for triggering the control switch, the push rod driven part and the push rod triggering part are respectively located at two ends of the push rod in the moving direction of the push rod; the push rod spring groove of the push rod and the push rod triggering part are located at the same end of the push rod in the moving direction of the push rod.

[0014] Further, the control switch is a micro switch.

[0015] Further, the operating system further comprises a handle arranged in rotation, the operating mechanism further comprises a transmission member, a front connecting rod, a lock catch member, a jump catch member, a rear connecting rod and a jump catch member spring, the transmission member and the jump catch member are respectively arranged in rotation on the support, the handle is in transmission cooperation with the transmission member for driving the transmission member to rotate, the transmission member is in transmission connection with the lock catch member through the front connecting rod, the lock catch member is in transmission connection with the transmission rod through the rear connecting rod for driving the transmission rod to rotate, the lock catch member and the jump catch member keep in snap cooperation in the closing state of the operating mechanism, the lock catch member and the jump catch member are out of the snap cooperation in the opening state and the tripping state of the operating mechanism, the jump catch member spring acts on the jump catch member for resetting the jump catch member to the initial position and keeping the jump catch member at the initial position.

[0016] Further, the transmission member, the jump buckle member and the transmission rod have the same rotation direction as the direction d3; the bracket comprises two bracket side plates arranged side by side and oppositely along the direction d3, and the transmission member, the front connecting rod, the lock buckle member, the jump buckle member, the rear connecting rod and the transmission rod are located between the two side plates; the handle has the same rotation direction as the direction d4.

[0017] Further, the operating system further comprises a zero sequence current transformer for detecting the residual current and connected with the control module, and a short circuit protection mechanism for driving the operating mechanism to trip when a short circuit fault occurs in the circuit where the movable contact mechanism is located.

[0018] Further, the contact system further comprises a contact spring; when the operating mechanism is tripped, the transmission rod is used for pressing the movable contact mechanism to move to the open position; when the operating mechanism is closed, the transmission rod is used for avoiding the movable contact mechanism, and the contact spring drives the movable contact mechanism to reset to the closed position.

[0019] A control and protection switch comprising the operating system.

[0020] The operating system of the utility model, the push rod cooperates with the operating mechanism, and when the operating mechanism is tripped, the control switch is disconnected from the power supply circuit of the control module, so that when the control and protection switch of the embodiment is tripped, the control module is still continuously powered and damaged; the transmission arm and the push rod cooperate to trigger the control switch, the transmission structure is simple, the transmission path is short, and the transmission process is reliable.

[0021] In addition, the push rod reset member can drive the push rod to reset, and can also apply a force to the transmission arm through the push rod, so as to accelerate the energy release process of the energy storage torsional spring, further accelerate the rotation speed of the transmission rod, thereby improving the opening speed of the movable contact mechanism and the static contact, and improving the breaking capacity of the contact system. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the control and protection switch of the utility model;

[0023] Figure 2 It is a structural schematic diagram of the control and protection switch of the utility model without a shell;

[0024] Figure 3 It is a cooperation structural schematic diagram of the operating mechanism, the push rod and the control switch under one visual angle, and the operating mechanism is in the closed state;

[0025] Figure 4 It is a cooperation structural schematic diagram of the operating mechanism, the push rod and the control switch under another visual angle, and the operating mechanism is in the closed state;

[0026] Figure 5Is the cooperation structure schematic diagram of the operating mechanism, push rod and control switch under one visual angle, and the operating mechanism is in the open state.

[0027] Figure 6 Is the cooperation structure schematic diagram of the operating mechanism, push rod and control switch under another visual angle, and the operating mechanism is in the open state.

[0028] Figure 7 Is the structure schematic diagram of the operating mechanism to make the contact system closed.

[0029] Figure 8 Is the structure schematic diagram of the operating mechanism to make the contact system disconnected.

[0030] Figure 9 Is the principle block diagram of one implementation mode of the control and protection switch.

[0031] Figure 10 Is the principle block diagram of another implementation mode of the control and protection switch.

[0032] Explanation of reference signs

[0033] 1 handle;

[0034] 2 operating mechanism, 2-0 energy storage torsional spring, 2-01 transmission arm, 2-02 pivot arm, 2-1 transmission part, 2-2 front connecting rod, 2-3 lock catch, 2-4 jump catch, 2-5 rear connecting rod, 2-6 transmission rod, 2-7 jump catch spring, 2-8 support;

[0035] 3 breaking electromagnet;

[0036] 4 short-circuit protection mechanism;

[0037] 5 contact system, movable contact mechanism 5-1, movable contact 5-11, support 5-12, static contact 5-2, contact spring 5-3;

[0038] 6 arc extinguishing chamber;

[0039] 7 push rod;

[0040] 8 control module;

[0041] 9 first terminal;

[0042] 10 second terminal;

[0043] 11 zero sequence current transformer;

[0044] 12 third terminal;

[0045] 13 fourth terminal;

[0046] 14 control switch, operating rod 14-0;

[0047] 15 push rod return member;

[0048] 16 traction rod. DETAILED DESCRIPTION

[0049] The following embodiments of the control and protection switch of the present application are further illustrated with reference to the accompanying drawings. The control and protection switch of the present application is not limited to the following embodiments.

[0050] As shown in Figures 1-10 , it is one embodiment of the control and protection switch of the present application, and the control and protection switch of the present embodiment is preferably a motor circuit breaker. Further, as shown in Figures 1-6 , the length direction, the width direction and the height direction of the control and protection switch of the present embodiment are direction d3, direction d5 and direction d4 respectively, and direction d3, direction d4 and direction d5 are perpendicular to each other.

[0051] As shown in Figures 1-2 , 9-10, the control and protection switch of the present embodiment includes an operating system and at least one set of contact system 5, the contact system 5 includes a movable contact mechanism 5-1 and a static contact 5-2 used in cooperation, the operating system is used to control the movable contact mechanism 5-1 to move to make it close and open with the static contact 5-2, that is, to switch the contact system 5 between the closed state and the open state, that is, to switch the control and protection switch between the closed state and the open state.

[0052] Specifically, as shown in Figures 9-10 , the control and protection switch of the present embodiment is a three-phase switch, which includes L1 phase circuit, L2 phase circuit and L3 phase circuit, and each of the three-phase circuits includes a contact system 5, and the movable contact mechanism 5-1 of each contact system 5 acts synchronously to close and open each contact system 5. Further, in the control and protection switch of the present embodiment, the movable contact mechanism 5-1 of each phase contact system 5 shares a support 5-12, or the support 5-12 of each movable contact mechanism 5-1 is an integrated structure, that is, the movable contact 5-11 of each phase is arranged on the same support 5-12, thereby further ensuring the synchronization of closing and opening of each phase contact system 5. Further, in the control and protection switch of the present embodiment, the contact system 5 of each phase circuit is arranged side by side along direction d5.

[0053] Further, as shown in Figure 1 , 7-8, the contact system 5, the movable contact mechanism 5-1 is linearly arranged, and the movable contact mechanism 5-1 is closed and disconnected with the fixed contact 5-2 by reciprocating movement. The movable contact mechanism 5-1 comprises a support 5-12 and a movable contact 5-11 arranged on the support 5-12, and the movable contact mechanism 5-1 is linearly arranged by the support 5-12, and the movable contact 5-11 is moved to close and disconnect with the fixed contact 5-2 under the driving of the support 5-12.

[0054] Further, the contact system 5 further comprises a contact spring 5-3, which is used at least for applying a force to the movable contact 5-11 to press the fixed contact 5-2 when the movable contact 5-11 is closed with the fixed contact 5-2, to ensure reliable and good contact between the movable contact 5-11 and the fixed contact 5-2. Further, the contact spring 5-3 is also used to drive the movable contact mechanism 5-1 to move from the disconnected position to the closed position, so that the movable contact mechanism 5-1 is closed with the fixed contact 5-2.

[0055] Further, the contact system 5-1 comprises two groups of fixed contacts 5-2, and the movable contact 5-11 comprises two groups of movable contacts arranged at two ends thereof respectively, and the two groups of movable contacts are matched with the two groups of fixed contacts 5-2 respectively.

[0056] Specifically, as shown in Figure 1 7 -8, the movable contact mechanism 5-1 is arranged in the direction d4, that is, the movable contact mechanism 5-1 reciprocates in the direction d4 to close and disconnect with the fixed contact 5-2; in the contact system 5, the two groups of fixed contacts 5-2 are arranged side by side and spaced apart in the direction d3, and the two groups of fixed contacts 5-2 are used to electrically connect with the power side wire and the load side wire respectively; the contact spring 5-3 acts on the support 5-12, so that the support 5-12 has a tendency to move to the closed position. Further, the contact spring 5-3 is a linear compression spring, one end of the contact spring 5-3 is matched with the support 5-12 and the other end is fixedly arranged (for example, fixedly arranged on the shell structure of the control and protection switch in the embodiment); the fixed contact 5-2 and the contact spring 5-3 are located on both sides of the movable contact 5-11 in the moving direction of the movable contact mechanism 5-1. Specifically, as shown in Figure 1 7 -8, the up and down directions of the drawing are the direction d4.

[0057] As other embodiments of the contact system 5, the difference between the contact system 5 and the contact system 5 of the embodiment is that the contact system 5 comprises one group of fixed contacts 5-2, and the movable contact 5-11 is provided with one group of movable contacts matched therewith.

[0058] ​​As another embodiment of the contact system 5, the difference between it and the contact system 5 of this embodiment is that the moving contact mechanism 5-1 is rotatably configured, and the moving contact mechanism 5-1 closes and opens with the stationary contact 5-2 by reciprocating rotation.

[0059] Furthermore, such as Figure 1 , 9 As shown in Figure -10, the control and protection switch of this embodiment also includes a first terminal 9 and a second terminal 10. The first terminal 9, the second terminal 10 and the contact system 5 are matched one-to-one. The contact system 5 is connected in series between the corresponding first terminal 9 and the second terminal 10. The first terminal 9 and the second terminal 10 are electrically connected to the power supply side wire and the load side wire, respectively. That is, in the contact system 5, one stationary contact 5-2 is electrically connected to the power supply side wire through the first terminal 9, and the other stationary contact 5-2 is electrically connected to the load side wire through the second terminal 10.

[0060] Furthermore, such as Figures 1-10 As shown, the operating system includes an operating mechanism 2, which is used for transmission cooperation with the moving contact mechanism 5-1, i.e., the operating mechanism 2 and the moving contact mechanism 5-1 are in transmission cooperation. The operating mechanism 2 includes an energy storage torsion spring 2-0, a fixedly mounted bracket 2-8 (for example, the bracket 2-8 is fixedly connected to and / or limited by the housing structure of the control and protection switch to achieve the fixed mounting of the bracket 2-8), and a transmission rod 2-6 rotatably mounted on the bracket 2-8. The two spring arms of the energy storage torsion spring 2-0 are a transmission arm 2-01 rotatably connected to the transmission rod 2-6 and a pivot arm 2-02 rotatably connected to the bracket 2-8, i.e., the energy storage torsion spring 2-0 includes two spring arms, namely the transmission arm 2-01 and the pivot arm 2-02, the transmission arm 2-01 being rotatably connected to the transmission rod 2-6 and the pivot arm 2-02 being rotatably connected to the bracket 2-8.

[0061] When the operating mechanism 2 closes (i.e., when the operating mechanism 2 performs the closing operation), the transmission rod 2-6 rotates along direction d2 to move the moving contact mechanism 5-1 to the closed position and drive the transmission arm 2-01 to the position p1 to store energy in the energy storage torsion spring 2-0; that is, when the operating mechanism 2 closes, the transmission rod 2-6 rotates along direction d2 to move the moving contact mechanism 5-1 to the closed position to close with the stationary contact 5-2, and at the same time, the transmission rod 2-6 drives the transmission arm 2-01 to the position p1 to store energy in the energy storage torsion spring 2-0. The position p1 of the transmission arm 2-01 corresponds to the energy storage state of the energy storage torsion spring 2-0.

[0062] When the operating mechanism 2 opens (i.e., when the operating mechanism 2 performs the opening operation), the energy storage torsion spring 2-0 releases energy to drive the transmission rod 2-6 to rotate along direction d1 via the transmission arm 2-01, thereby driving the moving contact mechanism 5-1 to move to the disconnected position. At the same time, the transmission arm 2-01 moves to position p2. When the operating mechanism 2 closes, the energy storage torsion spring 2-0 releases energy and drives the transmission rod 2-6 to rotate along direction d1 via the transmission arm 2-01. At the same time, the transmission rod 2-6 drives the moving contact mechanism 5-1 to move to the disconnected position and disconnect from the stationary contact 5-2. At the same time, the transmission arm 2-01 moves to position p2. The position p2 of the transmission arm 2-01 corresponds to the energy release state of the energy storage torsion spring 2-0. The directions d1 and d2 are opposite to each other.

[0063] Specifically, such as Figures 7-8 As shown, when the operating mechanism 2 closes, the transmission rod 2-6 rotates along direction d2 to avoid the moving contact mechanism 5-1, so that the moving contact mechanism 5-1 moves to the closed position under the drive of the contact spring 5-3 and closes with the stationary contact 5-2. In the closed state, the operating mechanism 2 preferably has a gap between the transmission rod 2-6 and the moving contact mechanism 5-1 to ensure that the moving contact mechanism 5-1 can move to the closed position and move to the correct position, thereby ensuring that the moving contact mechanism 5-1 and the stationary contact 5-2 close reliably. When the operating mechanism 2 opens, the transmission rod 2-6 rotates along direction d1 to press against the moving contact mechanism 5-1, so that the moving contact mechanism 5-1 moves to the open position and disconnects from the stationary contact 5-2. At the same time, the energy storage spring 5-3 stores energy for the next closing of the moving contact mechanism 5-1 and the stationary contact 5-2. Furthermore, when the operating mechanism 2 closes, the contact spring 5-3 presses against the support 5-12 of the moving contact mechanism 5-1, driving the moving contact mechanism 5-1 to move linearly to the closed position to close with the stationary contact 5-2; when the operating mechanism 2 opens, the transmission rod 2-6 presses against the support 5-12 of the moving contact mechanism 5-1, driving the moving contact mechanism 5-1 to move to the open position to disconnect from the stationary contact 5-2, while the support 5-12 stores energy in the contact spring 5-3. Furthermore, the bracket 2-8 can be an independent structure, that is, the bracket 2-8 is independent of the housing structure and other components of the control and protection switch of this embodiment; or, the bracket 2-8 is implemented by the housing structure of the control and protection switch of this embodiment, that is, a part of the housing structure of the control and protection switch of this embodiment acts as the bracket 2-8. Furthermore, as... Figures 7-8 The directions shown are as follows: direction d1 is clockwise and direction d2 is counterclockwise.

[0064] Furthermore, such as Figures 7-8As shown, the operating system further comprises a handle 1 arranged rotatably; the operating mechanism 2 is realized by the prior art, for example, the operating mechanism 2 further comprises a transmission member 2-1, a front connecting rod 2-2, a locking member 2-3, a jump member 2-4, a rear connecting rod 2-5 and a jump spring 2-7; the transmission member 2-1 and the jump member 2-4 are arranged rotatably on a bracket 2-8 respectively, the handle 1 is in transmission cooperation with the transmission member 2-1 for driving the rotation thereof, the transmission member 2-1 is in transmission connection with the locking member 2-3 through the front connecting rod 2-2, the locking member 2-3 is in transmission connection with the transmission rod 2-6 through the rear connecting rod 2-5 for driving the rotation thereof, the locking member 2-3 and the jump member 2-4 keep in snap cooperation in the closed state of the operating mechanism 2, the locking member 2-3 and the jump member 2-4 are out of snap cooperation in the open state of the operating mechanism 2, the jump spring 2-7 acts on the jump member 2-4 for resetting it to the initial position and keeping it at the initial position. Further, the rotation shaft direction of the transmission member 2-1, the jump member 2-4 and the transmission rod 2-6 is the same as the direction d3; the bracket 2-8 comprises two bracket side plates arranged side by side oppositely along the direction d3, the transmission member 2-1, the front connecting rod 2-2, the locking member 2-3, the jump member 2-4, the rear connecting rod 2-5 and the transmission rod 2-6 are all located between the two side plates; the rotation shaft direction of the handle 1 is the same as the direction d4. The action process of the operating mechanism 2 is the same as the prior art, which will not be described here.

[0065] Further, as shown in Figures 1-2 , 7-8, the operating mechanism 2 and the contact system 5 are arranged side by side along the direction d4.

[0066] Further, as shown in Figures 1-6As shown, the operating system further comprises a control module 8, a breaking electromagnet 3 driven by the control module 8, a push rod 7 linked with the transmission arm 2-01 of the energy storage torsion spring 2-0, and a control switch 14 connected in series in the power supply circuit of the control module 8. The breaking electromagnet 3 is driven to drive the movable contact mechanism 5-1 to move to the open position, i.e., the control module 8 receives a control signal to drive the breaking electromagnet 3 to act, and then the breaking electromagnet 3 drives the movable contact mechanism 5-1 to move to the open position and disconnect from the static contact 5-2. During the movement of the transmission arm 2-01 from the position p2 to the position p1 (i.e., when the operating mechanism 2 is closed), the push rod 7 triggers the control switch 14 to turn on the power supply circuit of the control module 8. That is, the control switch 14 is a normally open switch. When the operating mechanism 2 is opened, the transmission arm 2-01 moves from the position p2 to the position p1, and the push rod 7 triggers the control switch 14 to switch to the on state to turn on the power supply circuit of the control module 8. During the movement of the transmission arm 2-01 from the position p1 to the position p2, the push rod 7 moves away from the control switch 14 to release the control switch 14, so that the control switch 14 returns to the breaking state. The linkage between the push rod 7 and the transmission arm 2-01 means that the push rod 7 moves due to the movement of the transmission arm 2-01. Only when the transmission arm 2-01 moves, the push rod 7 moves, otherwise the two are relatively static. The "during the movement of the transmission arm 2-01 from the position p2 to the position p1" means the whole process of the movement of the transmission arm 2-01 from the position p2 to the position p1. Therefore, the time when the push rod 7 triggers the control switch 14 is at the time when the transmission arm 2-01 moves to the position p1 or before the transmission arm 2-01 moves to the position p1 after starting from the position p2. In this embodiment, the time when the push rod 7 triggers the control switch 14 can be slightly earlier than the time when the transmission arm 2-01 moves to the position p1, so as to ensure that the push rod 7 can trigger the control switch 14. The "control signal" received by the control module 8 can be a remote opening signal or a fault signal, and the fault signal includes a residual current fault signal and an overload current fault signal.

[0067] The push rod 7 cooperates with the operating mechanism 2 to trigger the control switch 14 to turn off the power supply circuit of the control module 8 when the operating mechanism 2 is opened, so as to avoid the case that the control module 8 is still continuously powered and damaged after the control and protection switch of this embodiment is opened. The transmission arm 2-01 of the energy storage torsion spring 2-0 and the push rod 7 cooperate to trigger the control switch 14, and the transmission structure is simple, the transmission path is short, and the transmission process is reliable.

[0068] As other embodiments of the operating system, distinguished from the present embodiment in that: the transmission arm 2-01 is moved from position p1 to position p2 (i.e. when the operating mechanism 2 is opened), the push rod 7 triggers the control switch 14 to disconnect the power supply circuit of the control module 8, that is, the control switch 14 is a normally closed switch, when the operating mechanism 2 is opened, the transmission arm 2-01 is moved from position p1 to position p2, the push rod 7 triggers the control switch 14 to switch to the disconnected state to disconnect the power supply circuit of the control module 8, when the operating mechanism 2 is closed, the transmission arm 2-01 is moved from position p2 to position p1, the push rod 7 is away from and releases the control switch 14, and the control switch 14 returns to the conducting state.

[0069] Further, as shown in Figure 9 , the control module 8 includes a bidirectional thyristor. Alternatively, as shown in Figure 10 , the control module 8 includes an intermediate relay.

[0070] Further, as shown in Figures 2-6 , the control switch 14 is a micro switch. Specifically, the micro switch includes an operating rod 14-0, and the push rod 7 presses the operating rod 14-0 to trigger the micro switch to switch the working state.

[0071] Further, as shown in Figures 2-6 , the control switch 14 is arranged on the bracket of the disconnecting electromagnet 3.

[0072] Further, as shown in Figures 3-6 , the operating system further includes a push rod reset member 15 in transmission cooperation with the push rod 7; when the transmission arm 2-01 is moved from position p2 to position p1 (i.e. when the operating mechanism 2 is closed), the push rod 7 stores energy in the push rod reset member 15, that is, when the operating mechanism 2 is closed, the transmission arm 2-01 needs to overcome the action force of the push rod reset member 15 to drive the push rod 7 to move; when the transmission arm 2-01 is moved from position p1 to position p2 (i.e. when the operating mechanism 2 is opened), the transmission arm 2-01 avoids the push rod 7, and the push rod reset member 15 releases energy to drive the push rod 7 to reset, that is, when the operating mechanism 2 is opened, the transmission arm 2-01 continues to avoid the push rod 7 without applying action force to it, and the push rod 7 can be reset under the action of the push rod reset member 15.

[0073] The push rod reset member 15 can not only drive the push rod 7 to reset, but also apply action force to the transmission arm 2-01 through the push rod 7, thereby accelerating the energy release process of the energy storage torsional spring 2-0, further accelerating the rotation speed of the transmission rod 2-6, thereby improving the disconnection speed of the movable contact mechanism 5-1 and the static contact 5-2, and improving the breaking capacity of the contact system 5.

[0074] As other embodiments of the matching mode of the push rod 7 with the transmission arm 2-01, the difference between the embodiments and the present embodiment is that the operating system does not set the push rod reset member 15; when the transmission arm 2-01 moves from the position p1 to the position p2, i.e. when the operating mechanism 2 is opened, the push rod 7 is driven by the transmission arm 2-01 to reset; that is, when the transmission arm 2-01 switches between the position p1 and the position p2, the push rod 7 moves under the driving of the transmission arm 2-01.

[0075] Further, as shown in Figures 3-6 , the push rod 7 is linearly movably arranged, one end of which is in transmission cooperation with the transmission arm 2-01 and the other end of which is used for triggering the control switch 14. Further, the push rod 7 is linearly movably arranged along the direction d3.

[0076] As other embodiments of the movement mode of the push rod 7, the push rod 7 is rotatably arranged in the middle part, one end of which is in transmission cooperation with the transmission arm 2-01 and the other end of which is used for triggering the control switch 14.

[0077] Further, as shown in Figures 3-6 , one end of the push rod 7 abuts against one end of the transmission arm 2-01 which is rotatably connected with the transmission rod 2-6 and the other end of the push rod 7 is used for triggering the control switch 14. Further, the push rod reset member 15 is a linear compression spring, one end of which is fixedly arranged (for example, fixedly arranged on the support 2-8 of the operating mechanism 2 or on the shell structure of the control and protection switch of the present embodiment) and the other end of which cooperates with the push rod 7. Further, the contact point of the push rod 7 with the transmission arm 2-01 is located on the axis of the linear compression spring and the axis of the linear compression spring is parallel to the moving direction of the push rod 7, so as to ensure the reliable and stable linear movement of the push rod 7. Further, the push rod 7 comprises a push rod spring groove, one end of the linear compression spring being arranged in the push rod spring groove.

[0078] As other embodiments of the push rod reset member 15, the push rod reset member 15 is a tension spring or a torsion spring.

[0079] Specifically, as shown in Figures 3-6As shown, one embodiment of the push rod 7 is shown: the push rod 7 includes a push rod driven part 7-1, a push rod body 7-2 and a push rod trigger part 7-3, the push rod driven part 7-1 is vertically connected to the push rod body 7-2 at one end and is used to abut against the transmission arm 2-01 at the other end, the push rod trigger part 7-3 is arranged on the push rod body 7-2 and is used to trigger the control switch 14, the push rod driven part 7-1 and the push rod trigger part 7-3 are respectively located at both ends of the push rod 7 in the moving direction of the push rod 7; the push rod spring groove and the push rod trigger part 7-3 are located at the same end of the push rod 7 in the moving direction of the push rod 7. Further, the push rod spring groove and the push rod trigger part 7-3 are arranged side by side along the direction d5. Further, the push rod body 7-2 is a plate structure, and the plane thereof is perpendicular to the direction d3. Further, the push rod body 7-2 is a rectangular plate structure, which includes two opposite long edges, the push rod driven part 7-1 is connected to one of the long edges and is arranged at the midpoint position of the long edge, the push rod spring groove is arranged close to the other long edge and is arranged at the midpoint position of the long edge, the push rod trigger part 7-3 is arranged at one corner of the rectangular plate structure, and the push rod trigger part 7-3 is a protruding structure protruding towards the control switch 14 along the direction d4.

[0080] Further, as shown in Figure 2 、 9 -10, the operating system further includes a third terminal 12 and a fourth terminal 13, the third terminal 12 and the fourth terminal 13 are respectively electrically connected to the control module 8, and an external circuit provides working power to the control module 8 through the third terminal 12 and the fourth terminal 13. Further, the control switch 14 is connected in series between the third terminal 12 and the control module 8.

[0081] Further, as shown in Figures 1-2 、9-10, the operating system further includes a zero sequence current transformer 11 for detecting residual current and connected to the control module 8, and a short circuit protection mechanism 4 for driving the operating mechanism 2 to trip when a short circuit fault occurs in the circuit where the movable contact mechanism 5-1 is located.

[0082] Specifically, the zero sequence current transformer 11 includes a zero sequence current transformer coil, and the conductor in series with the contact system 5 passes through the zero sequence current transformer coil.

[0083] Specifically, the short circuit protection mechanism 4 is a direct-acting electromagnetic release, which includes a top rod for driving the trip part 2-4 of the operating mechanism 2 to rotate to disengage the latching part 2-3, and the top rod is arranged to move along the direction d4.

[0084] As shown in Figures 1-2As shown, the control and protection switch of the embodiment further comprises an arc extinguishing chamber 6 for extinguishing the arc generated when the contact system 5 is closed and opened. Further, in the control and protection switch of the embodiment, each contact system 5 is matched with two arc extinguishing chambers 6, and the two arc extinguishing chambers 6 are arranged on the two sides of the contact system 5 along the direction d3, one arc extinguishing chamber 6 is matched with one static contact 5-2 and one end of the moving contact 5-11, and the other arc extinguishing chamber 6 is matched with the other static contact 5-2 and the other end of the moving contact 5-11.

[0085] As shown, it is one layout mode of the control and protection switch of the embodiment. Figures 1-6 As shown, it is one layout mode of the control and protection switch of the embodiment.

[0086] The breaking electromagnet 3, the push rod 7, the operating mechanism 2 and the control module 8 are arranged in sequence and side by side along the direction d3, that is, in the direction d3, the push rod 7 is located between the breaking electromagnet 3 and the operating mechanism 2, the breaking electromagnet 3 and the push rod 7 are located on one side of the operating mechanism 2, and the control module 8 is located on the other side of the operating mechanism 2; the rotation shaft direction of the handle 1 is the same as the direction d4, and the handle 1 is located between the operating mechanism 2 and the control module 8 in the direction d3; in the direction d4, the transmission member 2-1 and the transmission rod 2-6 are located at the two ends of the operating mechanism 2 respectively; in the direction d4, the control switch 14, the handle 1 and the control module 8 are located at one end of the operating system, the short-circuit protection mechanism 4 and the zero sequence current transformer 11 are located at the other end of the operating system, and the breaking electromagnet 3 extends from one end of the operating system to the other end; the push rod reset member 15 and the control switch 14 are arranged side by side along the direction d5; in the direction d4, the control switch 14 is located on one side of the push rod 7, and the contact system 5 is located on the other side of the push rod 7; the contact system 5 and the operating system are arranged side by side along the direction d4, that is, the contact system 5 is located on the same side of the breaking electromagnet 3, the push rod 7, the operating mechanism 2 and the control module 8 in the direction d4; in the contact system 5, the static contact 5-2 and the moving contact 5-11 are arranged side by side along the direction d4, and the two static contacts 5-2 are arranged side by side along the direction d3; the first terminal 9 and the second terminal 10 are respectively located on the two sides of the operating system in the direction d3.

[0087] It should be noted that in the description of the utility model, the terms "upper", "lower", "left", "right", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings or the orientation or positional relationship in use, and are only for the convenience of description, and cannot be understood as indicating that the device or element referred to must have a specific orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" and the like are only used for differentiation in description, and cannot be understood as indicating relative importance.

[0088] The above is further detailed description of the utility model in combination with specific preferred embodiments, and cannot be deemed as limitation of the specific implementation of the utility model to these descriptions. For ordinary skilled persons in the technical field to which the utility model belongs, without departing from the concept of the utility model, a number of simple deductions or substitutions can be made, and all of them shall be deemed as belonging to the protection scope of the utility model.

Claims

1. An operating system comprising an operating mechanism (2), a control module (8), and a disconnecting electromagnet (3) driven by the control module (8). The operating mechanism (2) comprises an energy storage torsion spring (2-0), a fixedly mounted bracket (2-8), and a transmission rod (2-6) rotatably mounted on the bracket (2-8). The two spring arms of the energy storage torsion spring (2-0) are a transmission arm (2-01) rotatably connected to the transmission rod (2-6) and a pivot arm (2-02) rotatably connected to the bracket (2-8), respectively. When the operating mechanism (2) is closed, the transmission rod (2-6) moves along direction d.

2. Rotation is used to move the moving contact mechanism (5-1) to the closed position and drive the transmission arm (2-01) to position p1 to store energy in the energy storage torsion spring (2-0); when the operating mechanism (2) opens, the energy storage torsion spring (2-0) releases energy to drive the transmission rod (2-6) to rotate along direction d1 through the transmission arm (2-01) and drive the moving contact mechanism (5-1) to the open position, while the transmission arm (2-01) moves to position p2; direction d1 and direction d2 are opposite to each other; the action of the disconnecting electromagnet (3) is used to drive the moving contact mechanism (5-1) to the open position; Its features are: The operating system also includes a push rod (7) linked to the transmission arm (2-01) and a control switch (14) connected in series in the power circuit of the control module (8); during the process of the transmission arm (2-01) moving from position p2 to position p1, the push rod (7) triggers the control switch (14) to turn on the power circuit of the control module (8); or, during the process of the transmission arm (2-01) moving from position p1 to position p2, the push rod (7) triggers the control switch (14) to turn off the power circuit of the control module (8).

2. The operating system according to claim 1, characterized in that: The push rod (7) is linearly movable, with one end connected to the transmission arm (2-01) and the other end used to trigger the control switch (14).

3. The operating system according to claim 1, characterized in that: The operating system also includes a push rod reset component (15) that is driven and cooperates with the push rod (7); when the transmission arm (2-01) moves from position p2 to position p1, the push rod (7) causes the push rod reset component (15) to store energy; when the transmission arm (2-01) moves from position p1 to position p2, the transmission arm (2-01) avoids the push rod (7), and the push rod reset component (15) releases energy and drives the push rod (7) to reset.

4. The operating system according to claim 3, characterized in that: The push rod (7) is linearly movable, with one end abutting against the end of the transmission arm (2-01) that is rotatably connected to the transmission rod (2-6), and the other end used to trigger the control switch (14).

5. The operating system according to claim 4, characterized in that: The push rod reset component (15) is a linear compression spring. The linear compression spring and the transmission arm (2-01) are located on both sides of the push rod (7) in the direction of movement of the push rod (7) and act on both ends of the push rod (7).

6. The operating system according to claim 5, characterized in that: The breaking electromagnet (3), push rod (7) and operating mechanism (2) are arranged side by side along direction d3; the push rod reset component (15) and control switch (14) are arranged side by side along direction d5; the push rod (7) is moved along direction d4; and directions d3, d4 and d5 are perpendicular to each other.

7. The operating system according to claim 6, characterized in that: The push rod (7) includes a push rod driven part (7-1), a push rod body (7-2), and a push rod triggering part (7-3). One end of the push rod driven part (7-1) is perpendicularly connected to the push rod body (7-2), and the other end is used to abut against the transmission arm (2-01). The push rod triggering part (7-3) is set on the push rod body (7-2) and is used to trigger the control switch (14). The push rod driven part (7-1) and the push rod triggering part (7-3) are located at both ends of the push rod (7) in the direction of movement of the push rod (7). The push rod spring groove and the push rod triggering part (7-3) of the push rod (7) are located on the same end of the push rod (7) in the direction of movement of the push rod (7).

8. The operating system according to claim 1, characterized in that: The control switch (14) is a micro switch.

9. The operating system according to claim 6, characterized in that: The operating system also includes a rotatable handle (1), and the operating mechanism (2) includes a transmission component (2-1), a front connecting rod (2-2), a locking component (2-3), a jump fastener (2-4), a rear connecting rod (2-5), and a jump fastener spring (2-7). The transmission component (2-1) and the jump fastener (2-4) are rotatably mounted on the bracket (2-8). The handle (1) is driven to rotate by the transmission component (2-1). The transmission component (2-1) is connected to the locking component (2-8) via the front connecting rod (2-2). -3) The transmission is connected, and the locking element (2-3) is connected to the transmission rod (2-6) through the rear connecting rod (2-5) to drive its rotation. In the closed state, the locking element (2-3) and the tripping element (2-4) of the operating mechanism (2) maintain a latching engagement. In the open state and the tripping state, the locking element (2-3) and the tripping element (2-4) are released from the latching engagement. The spring (2-7) of the tripping element acts on the tripping element (2-4) to reset it to the initial position and keep it in the initial position.

10. The operating system according to claim 9, characterized in that: The rotation axis direction of the transmission component (2-1), the jump fastener (2-4), and the transmission rod (2-6) is the same as that of direction d3; the bracket (2-8) includes two bracket side plates arranged side by side opposite each other along direction d3, and the transmission component (2-1), the front connecting rod (2-2), the locking fastener (2-3), the jump fastener (2-4), the rear connecting rod (2-5), and the transmission rod (2-6) are all located between the two side plates; the rotation axis direction of the handle (1) is the same as that of direction d4.

11. The operating system according to claim 1, characterized in that: The operating system also includes a zero-sequence current transformer (11) for detecting residual current and connected to the control module (8) and a short-circuit protection mechanism (4) for driving the operating mechanism (2) to trip when a short-circuit fault occurs in the circuit where the moving contact mechanism (5-1) is located.

12. The operating system according to claim 1, characterized in that: When the operating mechanism (2) opens, the transmission rod (2-6) is used to press the moving contact mechanism (5-1) to move it to the open position; when the operating mechanism (2) closes, the transmission rod (2-6) is used to avoid the moving contact mechanism (5-1), and the contact spring (5-3) drives the moving contact mechanism (5-1) to reset to the closed position.

13. A control and protection switch, characterized in that: The control and protection switch includes the operating system described in any one of claims 1-12.

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