Electricity taking mechanism and circuit breaker

Abstract

The utility model relates to the field of low-voltage electric appliances, in particular to an electricity taking mechanism and a circuit breaker comprising the electricity taking mechanism. In the electricity taking mechanism, a moving contact mechanism is switched between a closing position and an opening position through rotation and comprises a contact spring and a moving contact which are matched with each other and electrically connected, and an electricity taking piece comprises a first arm and a second arm which are matched with a test button. The contact spring is in contact with and electrically connected with the second arm when the moving contact mechanism is located at the closed position and is separated from the second arm to be disconnected when the moving contact mechanism is located at the disconnected position, and the power taking piece is further used for being electrically connected with an electronic assembly module of the circuit breaker to provide a working power supply for the electronic assembly module; according to the electricity taking mechanism and the circuit breaker, the safety of the circuit breaker is better.

Description

Technical Field

[0001] This utility model relates to the field of low-voltage electrical appliances, specifically to a power taking mechanism and a circuit breaker including the power taking mechanism. Background Technology

[0002] Existing circuit breakers, especially those with residual current protection, often have the following problems:

[0003] 1. The incoming and outgoing terminals of the circuit breaker must not be connected incorrectly. If the incoming and outgoing lines are connected incorrectly (i.e., reversed wiring—the incoming terminal of the circuit breaker is connected to the outgoing wire, and the outgoing terminal of the circuit breaker is connected to the incoming wire), after the circuit breaker trips due to a leakage fault, the circuit board continues to be powered, causing the thyristor to fail to cross zero (or to fall below the holding voltage). This prevents the circuit breaker's trip coil from stopping conduction and causes it to burn out. Moreover, when the circuit breaker trips, there is an induced voltage at the load end of the circuit breaker, resulting in poor safety performance.

[0004] 2. When testing the dielectric performance of a circuit breaker, dielectric tests should not be performed on the electronic component board, as high voltage can damage the electronic components on the board and pose a safety hazard. Utility Model Content

[0005] The purpose of this utility model is to overcome at least one defect of the prior art and provide a power taking mechanism and a circuit breaker including the power taking mechanism, so as to improve the safety of the circuit breaker.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A power-gathering mechanism includes a test button, a power-gathering component, and a phase contact system of a circuit breaker. The phase contact system includes a cooperating moving contact mechanism and a stationary contact. The moving contact mechanism switches between a closed position and an open position by rotation and includes a contact spring and a moving contact that cooperate and are electrically connected to each other. The power-gathering component includes a first arm and a second arm that cooperate with the test button. The contact spring is in contact with the second arm and electrically connected when the moving contact mechanism is in the closed position, and is separated from the second arm and disconnected when the moving contact mechanism is in the open position. The power-gathering component is also used to electrically connect to the electronic component module of the circuit breaker to provide it with operating power.

[0008] Furthermore, the contact spring is in contact with the second arm before the moving contact and the stationary contact are electrically connected, and is separated from the second arm after the moving contact and the stationary contact are separated.

[0009] Furthermore, when the moving contact mechanism is in the open position, the distance between the moving contact and the stationary contact is greater than the distance between the contact spring and the second arm.

[0010] Furthermore, the contact spring includes at least one spring contact arm, and the second arm includes a mating section. The spring contact arm and the mating section are arranged in a cross shape. The spring contact arm is in contact with the mating section and electrically connected when the moving contact mechanism is in the closed position, and is separated from the mating section and disconnected when the moving contact mechanism is in the open position.

[0011] Furthermore, the moving contact mechanism also includes a contact support, the contact spring is a torsion spring and includes two sets of spring arms, the contact spring and the moving contact are both mounted on the contact support, and the two sets of spring arms of the contact spring respectively cooperate with the contact support and the moving contact.

[0012] Furthermore, the power-taking mechanism also includes an operating mechanism of a circuit breaker that is connected to the moving contact mechanism in a transmission manner. The operating mechanism is used to drive the moving contact mechanism to rotate and close and open with the stationary contact. The operating mechanism includes a mechanism support, and the power-taking component is fixedly mounted on the mechanism support.

[0013] Furthermore, the mechanism support includes a conductive support side plate for connection in series with the N-pole circuit of the circuit breaker, and the first arm is electrically connected to the support side plate by the drive of the test button.

[0014] Furthermore, the power-collecting component is a power-collecting torsion spring, which includes a helical portion and a first arm and a second arm respectively connected to the helical portion.

[0015] Furthermore, one end of the second arm is connected to the spiral section, and the other end is used to extend to and electrically connect to the location of the electronic component module, providing operating power to the electronic component module.

[0016] Furthermore, the mechanism support also includes an insulated support body, the support body including a positioning post, a spiral part sleeved on the positioning post, and a first arm and / or a second arm respectively limiting and cooperating with the support body to at least prevent the spiral part from moving along its own axis and disengaging from the positioning post and to prevent the spiral part from rotating around the positioning post.

[0017] Furthermore, the main body of the bracket includes a horizontal main body and a vertical main body that are bent and connected together. The vertical main body is arranged opposite to the side plate of the bracket. One end of the horizontal main body is bent and connected to the vertical main body, and the other end is fixedly connected to the side plate of the bracket. A positioning post is arranged on the horizontal main body. The first arm and the second arm are respectively matched with the horizontal main body to limit the movement of the spiral part along its own axis and disengage from the positioning post, and to prevent the spiral part from rotating around the positioning post.

[0018] Furthermore, the bracket body and the bracket side plate are arranged side by side along the first direction, and the rotation axis of the moving contact mechanism is in the same direction as the first direction; the second arm includes a mating section and a second arm connecting part, the extension direction of the mating section is in the same direction as the first direction and is arranged on one side of the moving contact mechanism, one end of the mating section is connected to the spiral part and the other end is bent and connected to one end of the second arm connecting part, and the other end of the second arm connecting part extends to the location of the electronic component module and is electrically connected to it, and the second arm connecting part, the moving contact mechanism, the bracket body and the bracket side plate are arranged sequentially along the first direction.

[0019] Furthermore, the second arm connecting part is also used to limit the engagement with the circuit breaker housing and the second arm to limit the engagement with the bracket body, so as to keep the engaging section in the working position.

[0020] Furthermore, one end of the second arm connecting part is bent and connected to the mating section, and the other end is provided with a sixth connecting part. The sixth connecting part is used to be electrically connected to the electronic component module and is also used to be inserted into the second limiting groove of the housing.

[0021] Furthermore, the second arm connecting part also includes a first connecting part, one end of which is perpendicularly connected to the mating part and the other end is indirectly connected to the sixth connecting part. The first connecting part and the sixth connecting part are arranged in parallel and at intervals and are coplanar. The sixth connecting part extends away from the mating part.

[0022] Furthermore, the power-gathering mechanism also includes a conductive element, one end of which is electrically connected to the power-gathering element, and the other end of which is used to extend to and electrically connect to the location of the electronic component module, providing working power to the electronic component module.

[0023] Furthermore, the conductive component includes a conductive contact plate; the main body of the bracket includes a bent and connected horizontal main body and a vertical main body, the vertical main body is disposed opposite to the side plate of the bracket, one end of the horizontal main body is bent and connected to the vertical main body and the other end is fixedly connected to the side plate of the bracket; the horizontal main body includes a positioning post, a spiral part is sleeved on the positioning post, and the first arm and / or the second arm are limited and cooperated with the horizontal main body to fix the power-taking component on the horizontal main body; the conductive contact plate is inserted between the spiral part and the horizontal main body and is clamped by the spiral part and the horizontal main body, and the conductive contact plate is electrically connected to the spiral part.

[0024] Furthermore, the main body of the bracket and the side plate of the bracket are arranged side by side along the first direction, and the moving contact mechanism and the side plate of the bracket are located on both sides of the vertical part of the main body in the first direction. The rotation axis direction of the moving contact mechanism is the same as that of the first direction. The conductive component also includes a conductive component connecting part. One end of the conductive component connecting part is bent and connected to the conductive contact plate, and the other end is used to extend to the location of the electronic component module and electrically connect to it. The conductive connecting part is arranged between the moving contact mechanism and the vertical part of the main body and is limited and cooperated with the vertical part of the main body.

[0025] Furthermore, the spiral portion and the conductive contact plate are arranged side by side along a third direction, with the spiral portion located on one side of the conductive contact plate and the conductive connection portion located on the other side of the conductive contact plate. The end of the conductive connection portion used to connect with the electronic component module extends away from the spiral portion along a third direction.

[0026] Furthermore, the conductive component connecting part is inserted into the conductive plate limiting groove of the vertical part of the main body along the first direction.

[0027] A circuit breaker comprising the aforementioned power extraction mechanism.

[0028] Furthermore, the circuit breaker also includes an operating mechanism, a residual current tripping module, a zero-sequence current transformer, and an electronic component module; the operating mechanism and the moving contact mechanism are arranged side by side along a first direction, the residual current tripping module and the moving contact mechanism are arranged side by side along a second direction, the residual current tripping module and the moving contact mechanism are located on the same side of the operating mechanism's support in the first direction, the residual current tripping module and the operating mechanism are arranged side by side with the zero-sequence current transformer in a third direction and are located on one side of the zero-sequence current transformer, and the electronic component module is arranged side by side with the zero-sequence current transformer in a third direction and is located on the other side of the zero-sequence current transformer; the residual current tripping module and the electronic component module are arranged side by side with the phase contact system in the second direction; the first direction, the second direction, and the third direction are perpendicular to each other.

[0029] The power-taking mechanism of this utility model, due to the cooperation method between the power-taking component and the contact spring, regardless of whether the circuit breaker is connected in the correct direction (i.e., the preset input / output terminals of the circuit breaker are respectively connected to the input / output conductors of the external circuit) or in reverse direction (i.e., the preset input / output terminals of the circuit breaker are respectively connected to the output / input conductors of the external circuit), when the moving contact mechanism is in the open position, the second arm of the power-taking component and the contact spring are separated, forming a break in the power supply circuit of the electronic component module. This prevents continuous power supply to the electronic component module, and the thyristor cannot cross zero (or fall below the holding voltage). Consequently, the trip coil of the electromagnetic trip unit used to drive the operating mechanism to trip cannot stop. The circuit breaker is highly safe as it is designed to prevent burnout during conduction. Furthermore, when the moving contact mechanism is in the open position, the second arm of the power-taking component and the contact spring separate, creating a break in the power supply circuit of the electronic component module. Therefore, dielectric performance tests can be performed on the electronic component board without damaging the components, thus improving safety. Moreover, the power-taking component and contact spring serve as both a switch for the power supply circuit of the electronic component module and part of the power-taking mechanism, which helps reduce the number of circuit breaker components, simplifies the circuit breaker's structure, saves internal space, and simplifies assembly.

[0030] Furthermore, the contact spring is in contact with the second arm before the moving contact and the stationary contact are electrically connected, and is separated from the second arm after the moving contact and the stationary contact are separated. This can significantly reduce or eliminate the possibility of an electric arc being generated when the contact spring and the second arm are electrically connected and disconnected, or significantly reduce the energy of the electric arc generated when the contact spring and the second arm are electrically connected and disconnected. This avoids damage to the contact spring and the second arm by electric arc, ensures operational reliability, and extends service life.

[0031] Furthermore, the bracket side plate, as a component of the power extraction mechanism, enables the circuit breaker to cooperate with the first arm using its inherent structure, eliminating the need for additional parts for cooperation with the first arm, thus reducing the number of parts and simplifying the circuit breaker's structure.

[0032] Furthermore, the electrical connection between the spiral part and the conductive contact part is achieved through the interference fit of the spiral part, the conductive contact plate, and the horizontal part of the main body. The connection operation between the conductive part and the power taking part is simple and the contact is reliable.

[0033] In addition, the conductive connection part is inserted into the conductive plate limiting groove of the main body along the rotation axis of the moving contact mechanism, which helps to improve the structural compactness of the circuit breaker.

[0034] The circuit breaker of this utility model adopts the power extraction mechanism, which has good safety and simple structure. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the circuit breaker of this utility model, in which the electronic component module and the power supply component are electrically connected using the first implementation method;

[0036] Figure 2 This is a utility model Figure 1 An enlarged structural diagram of part A;

[0037] Figure 3 This is a schematic diagram of the power-generating component of this utility model;

[0038] Figure 4 This is a projected view of the circuit breaker of this utility model, in which the electronic component module and the power supply component are electrically connected using the first implementation method;

[0039] Figure 5 This is a utility model Figure 4 An enlarged structural diagram of part B;

[0040] Figure 6 This is a schematic diagram of the circuit breaker of this utility model, which shows the connection relationship between the electronic component module, the power supply component, and the electronic component board.

[0041] Figure 7This is a schematic diagram of the circuit breaker of this utility model, in which the electronic component module and the power supply component are electrically connected using the second implementation method;

[0042] Figure 8 This is a utility model Figure 7 An enlarged structural diagram of part C;

[0043] Figure 9 This is a projection view of the circuit breaker of this utility model, in which the electronic component module and the power supply component are electrically connected using the second implementation method;

[0044] Figure 10 This is a structural schematic diagram of the electronic component module, power-collecting component, conductive component 8, and operating mechanism of this utility model in the assembled state;

[0045] Figure 11 This is a schematic diagram of the conductive component of this utility model.

[0046] Explanation of reference numerals in the attached figures

[0047] Outer shell 1, first limiting groove 1-0, second limiting groove 1-1, support wall 1-2;

[0048] Operating mechanism 2, mechanism support 2-1, support body 2-10, body horizontal part 2-100, body vertical part 2-101, first limiting part 2-102, second limiting part 2-103, third limiting part 2-104, positioning column 2-105, fourth limiting part 2-106, support side plate 2-11, side plate connecting part 2-110;

[0049] Leakage trip module 3;

[0050] Phase contact system 4, moving contact mechanism 4-1, contact spring 4-10, spring contact arm 4-100, contact support 4-11, moving contact 4-12, stationary contact 4-2;

[0051] Power take-off component 5, spiral part 5-0, first arm 5-1, second arm 5-2, first section 5-20, second section 5-21, mating section 5-22, second arm connecting part 5-23, first connecting part section 5-230, second connecting part section 5-231, third connecting part section 5-232, fourth connecting part section 5-233, fifth connecting part section 5-234, sixth connecting part section 5-235;

[0052] Test button 6;

[0053] Zero-sequence current transformer 7;

[0054] Conductive component 8, conductive contact plate 8-0, first plate 8-1, second plate 8-2, third plate 8-3, fourth plate 8-4, fifth plate 8-5, sixth plate 8-6, conductive connecting plate 8-7, conductive connecting hole 8-70, conductive component limiting part 8-8;

[0055] Electronic component module 9;

[0056] First conductor 10;

[0057] Second conductor 11;

[0058] Phase pole output terminal 12;

[0059] Phase input terminal 13;

[0060] First plane p1, second plane p2, third plane p3. Detailed Implementation

[0061] The specific embodiments of the circuit breaker of this utility model are further described below with reference to the accompanying drawings. The circuit breaker of this utility model is not limited to the descriptions in the following embodiments.

[0062] The circuit breaker of this utility model is preferably an electronic residual current operated circuit breaker.

[0063] like Figure 1 , 4As shown in Figures 6-7, the circuit breaker of this utility model includes a housing 1 and an operating mechanism 2 disposed within the housing 1, at least one set of phase circuits and an N-pole circuit. The phase circuit includes a phase input terminal 13, a phase contact system 4, and a phase output terminal 12 connected in series. The phase contact system 4 includes a moving contact mechanism 4-1 and a stationary contact 4-2 used in conjunction. The moving contact mechanism 4-1 is rotatably disposed and is connected to the operating mechanism 2 for transmission. The moving contact mechanism 4-1 has two working positions, namely a closed position and an open position. The moving contact mechanism 4-1 switches between the two working positions by rotation. External force (the external force is the manual operating force of the operator or the electric operating force) The driving force of the mechanism drives the moving contact mechanism 4-1 to rotate to the closed / open position through the operating mechanism 2, thereby closing / opening with the stationary contact 4-2, which is equivalent to closing / opening the circuit breaker; the N-pole circuit is a disconnectable circuit or a straight-through circuit (a straight-through circuit refers to a circuit without any break points that can be operated to close or open, and the circuit is always in a conducting state). In this embodiment, the N-pole circuit is a disconnectable circuit, which includes an N-pole contact system. The N-pole contact system includes a N-pole moving contact and an N-pole stationary contact used in conjunction. The N-pole moving contact is connected to the operating mechanism 2 through transmission. External force drives the phase contact system 4 and the N-pole contact system to close and open simultaneously through the operating mechanism 2. Furthermore, the moving contact mechanism 4-1 is electrically connected to the phase pole output terminal 12, and the stationary contact 4-2 is electrically connected to the phase pole input terminal 13; the operating mechanism 2 includes a rotatable handle and a linkage structure. The handle switches between the closed and open positions by rotation. External force drives the handle to switch between the closed and open positions. The handle drives the circuit breaker to close and open through the linkage structure. The linkage structure includes a locking element and a tripping element that are rotatably set and interlocked. This can be achieved using existing technology and will not be described in detail here.

[0064] Furthermore, the circuit breaker of this utility model also includes a zero-sequence current transformer 7, an electronic component module 9, and a leakage current tripping module 3. Each phase of the circuit breaker includes a conductor passing through the zero-sequence current transformer 7. The zero-sequence current transformer 7 is connected to the electronic component module 9, and the electronic component module 9 is connected to the leakage current tripping module 3. The leakage current tripping module 3 is driven by the operating mechanism 2. When the electronic component module 9 detects leakage current through the zero-sequence current transformer 7, it drives the leakage current tripping module 3 to operate. The leakage current tripping module 3 (e.g., a leakage current trip device) drives the operating mechanism 2 to trip, causing the circuit breaker to open. Furthermore, the electronic component module 9 includes an electronic component board, and the electronic component module 9 is electrically connected to the phase input terminal 13 and the phase output terminal 12 of a set of phase circuits to draw power; the electronic component module 9 and the leakage current trip module 3 are configured as an integrated structure or a separate structure. In this embodiment, the electronic component module 9 and the leakage current trip module 3 preferably adopt a separate structure, that is, the two are two independent structures; the zero-sequence current transformer 7 includes a zero-sequence current inductance coil.

[0065] like Figure 1-2 Figures 4 and 6-10 show one implementation of the internal layout of the circuit breaker of this utility model:

[0066] The moving contact mechanism 4-1 and the operating mechanism 2 are arranged side by side along a first direction. The leakage current tripping module 3 and the operating mechanism 2 are arranged side by side along a first direction. The moving contact mechanism 4-1 and the stationary contact 4-2 are arranged side by side along a second direction. The moving contact mechanism 4-1 and the leakage current tripping module 3 are arranged side by side along a second direction. The leakage current tripping module 3 and the stationary contact 4-2 are respectively located on both sides of the moving contact mechanism 4-1 in the second direction. The operating mechanism 2 and the leakage current tripping module 3 are arranged side by side with the zero-sequence current transformer 7 along a third direction and are located on one side of the zero-sequence current transformer 7. Electronic component module. The electronic component module 9 is arranged side-by-side with the zero-sequence current transformer 7 along the third direction and is located on the other side of the zero-sequence current transformer 7. That is, in the third direction, the leakage trip module 3 and the operating mechanism 2 are arranged on one side of the zero-sequence current transformer 7, and the electronic component module 9 is arranged on the other side. The leakage trip module 3 and the electronic component module 9 are arranged side-by-side with the phase contact system 4 in the second direction. That is, in the second direction, the leakage trip module 3 and the electronic component module 9 are biased to one side, and the phase contact system 4 is biased to the other side. The first direction, the second direction, and the third direction are perpendicular to each other. Furthermore, the phase contact system and the N-pole contact system are arranged side-by-side along the first direction.

[0067] Specifically, such as Figure 1 direction shown, Figure 1 The front-back direction is the first direction. Figure 1 The left and right directions are the second directions. Figure 1 The vertical direction is the third direction; the electronic component module 9 and the separation module 3 are arranged side by side with the phase contact system 4, and the phase contact system 4 and the N-pole contact system are arranged side by side; the leakage trip module 3 and the phase contact system 4 are arranged side by side with the operating mechanism 2; the leakage trip module 3 and the operating mechanism 2 are arranged vertically with the zero-sequence current transformer 7 and are located above the zero-sequence current transformer coil 7; the electronic component module 9 and the zero-sequence current transformer 7 are arranged downwards side by side and are located below the zero-sequence current transformer 7.

[0068] like Figure 1-2As shown in Figures 4 and 6-10, the circuit breaker of this utility model also includes a power-taking mechanism. This power-taking mechanism is used to test the leakage current protection function of the circuit breaker. It includes a test button 6, a power-taking component 5, and a phase contact system 4. The moving contact mechanism 4-1 of the phase contact system 4 switches between a closed position and an open position by rotation. The moving contact mechanism 4-1 includes a contact spring 4-10 and a moving contact 4-12 that cooperate with and are electrically connected to each other. The contact spring 4-10 acts on the moving contact 4-12 to reliably close it with the stationary contact 4-2 (specifically, the operating mechanism 2 drives the moving contact 4-12 to contact the stationary contact 4-2). Subsequently, the operating mechanism 2 moves beyond its travel relative to the moving contact 4-12, causing the contact spring 4-10 to store energy. The contact spring 4-10 then applies a force to the moving contact 4-12, pressing the stationary contact 4-2. The power-taking component 5 includes a first arm 5-1 and a second arm 5-2 that cooperate with the test button 6. The contact spring 4-10 is in contact with the second arm 5-2 and electrically connected when the moving contact mechanism 4-1 is in the closed position, and is separated from the second arm 5-2 and disconnected when the moving contact mechanism 4-1 is in the open position. That is, when the moving contact mechanism 4-1 is in the closed position, the contact spring 4-10 is in contact with the second arm 5-2. The two are electrically connected by contact. When the moving contact mechanism 4-1 is in the open position, the contact spring 4-10 separates from the second arm 5-2, thus disconnecting them. The power taking component 5 is also used to electrically connect with the electronic component module 9 to provide it with working power. That is, when the moving contact mechanism 4-1 is in the closed position and closed with the stationary contact 4-2 (the circuit breaker is in the closed state), the second arm 5-2 contacts the contact spring 4-10 and conducts electricity. When the moving contact 4-12, the stationary contact 4-2, and the external power supply are connected in sequence, the external power supply can pass through the stationary contact 4-2, the moving contact 4-12, and the contact spring 5-2 in sequence. Spring 4-10 and power take-up component 5 supply power to electronic component module 9 (or, when stationary contact 4-2, moving contact 4-12, and external power supply are connected in sequence, the external power supply can supply power to electronic component module 9 in sequence through moving contact 4-12, contact spring 4-10, and power take-up component 5). When moving contact mechanism 4-1 is in the open position and disconnected from stationary contact 4-2 (circuit breaker is in the open state), regardless of whether moving contact 4-12 or stationary contact 4-2 is connected to external power supply, since contact spring 4-10 is separated from second arm 5-2, the two are disconnected, and external power supply cannot be electrically connected to electronic component module 9.

[0069] The circuit breaker of this utility model, due to the cooperation method of the power taking component 5 and the contact spring 4-10, regardless of whether the circuit breaker is connected in the correct direction (i.e., the preset input / output terminals of the circuit breaker are respectively connected to the input / output conductors of the external circuit) or in reverse direction (i.e., the preset input / output terminals of the circuit breaker are respectively connected to the output / input conductors of the external circuit), when the moving contact mechanism 4-1 is in the open position, the second arm 5-2 of the power taking component 5 and the contact spring 4-10 are separated, forming a break in the power supply circuit of the electronic component module 9. This prevents the continuous power supply to the electronic component module 9 from causing the thyristor to fail to cross zero (or fall below the holding voltage), thus preventing the trip coil of the electromagnetic trip device used to drive the operating mechanism 2 to trip from burning out. The safety level is high; moreover, when the moving contact mechanism 4-1 is in the open position (the circuit breaker of this utility model is in the open state), the second arm 5-2 of the power taking component 5 and the contact spring 4-10 are separated, forming a break point in the power supply circuit of the electronic component module 9. Therefore, the dielectric performance test can be performed on the electronic component board terminal corresponding to the electronic component module 9 without damaging the components on the electronic component board of the electronic component module 9, thus improving safety performance. Moreover, the power taking component 5 and the contact spring 4-10 serve as both the switch for the power supply circuit of the electronic component module 9 and the power taking mechanism, which helps to reduce the number of circuit breaker parts, simplify the circuit breaker structure, save internal space, and simplify the assembly operation of the circuit breaker. It should be noted that the "electronic component board terminal" refers to the wiring terminal of the circuit breaker that is electrically connected to the electronic component module 9 to supply it with power; such as Figure 6 As shown, specifically in the circuit breaker of this utility model, "electronic component board terminal" refers to the phase output terminal 12 that is electrically connected to the electronic component module 9.

[0070] Furthermore, the electronic component module 9 is electrically connected to the moving contact mechanism 4-1 via the power-taking component 5 and is directly connected to the terminal block of the moving contact mechanism 4-1 (i.e., there is no break between the moving contact mechanism 4-1 and this terminal block). Specifically, the moving contact mechanism 4-1 is electrically connected to the phase output terminal 12, and the stationary contact 4-2 is electrically connected to the phase input terminal; the electronic component module 9 is electrically connected to the moving contact mechanism 4-1 via the power-taking component 5 and is directly connected to the phase output terminal 12. Furthermore, the electronic component module 9 is electrically connected to the phase output terminal 12 via the second wire 11.

[0071] Furthermore, the contact spring 4-10 is in contact with the second arm 5-2 before the moving contact 4-12 and the stationary contact 4-2 are electrically connected. That is, during the process of the moving contact mechanism 4-1 switching from the open position to the closed position, the contact spring 4-10 is in contact with the second arm 5-2 before the moving contact 4-12 is in contact with the stationary contact 4-12. The contact spring 4-10 is separated from the second arm 5-2 after the moving contact 4-12 and the stationary contact 4-2 are separated. That is, during the process of the moving contact mechanism 4-1 switching from the closed position to the open position, the contact spring 4-10 can only be separated from the second arm 5-2 after the moving contact 4-12 and the stationary contact 4-2 are separated. The above design can significantly reduce or eliminate the possibility of arcing when the contact spring 4-10 and the second arm 5-2 are electrically connected and disconnected, or significantly reduce the energy of the arc generated when the contact spring 4-10 and the second arm 5-2 are electrically connected and disconnected, thereby preventing the contact spring 4-10 and the second arm 5-2 from being damaged by arcing, ensuring operational reliability and extending service life. Furthermore, when the moving contact mechanism 4-1 is in the disconnected position, the distance between the moving contact 4-12 and the stationary contact 4-2 is greater than the distance between the contact spring 4-10 and the second arm 5-2.

[0072] Furthermore, the contact spring 4-10 includes at least one spring contact arm 4-100. The spring contact arm 4-100 is electrically connected to the second arm 5-2 when the moving contact mechanism 4-1 is in the closed position, and is disconnected from the second arm 5-2 when the moving contact mechanism 4-1 is in the open position. That is, the contact spring 4-10 achieves closing and opening with the second arm 5-2 through the spring contact arm 4-100. Furthermore, the second arm 5-2 includes a mating section 5-22, and the spring contact arm 4-100 and the mating section 5-22 are arranged in a cross shape. Furthermore, the contact spring 4-10 is a torsion spring and includes two sets of spring arms. The axis of the torsion spring is parallel to the rotation axis of the moving contact mechanism 4-1 (i.e., the axis of the torsion spring coincides with or is parallel to the rotation axis of the moving contact mechanism 4-1, and one set of spring arms includes the spring contact arm 4-100. Specifically, the contact spring 4-10 is implemented as a double torsion spring or two single torsion springs.

[0073] Furthermore, the moving contact mechanism 4-1 also includes a contact support 4-11. The moving contact 4-12 and contact spring 4-10 are both mounted on the contact support 4-11. The contact spring 4-10 cooperates with both the contact support 4-11 and the moving contact 4-12. The operating mechanism 2 is connected to the contact support 4-11, thereby driving the moving contact mechanism 4-1 to rotate and switch between the closed and open positions. The contact spring 4-10 moves with the movement of the contact support 4-11. In particular, the spring contact arm 4-100 of the contact spring 4-10 moves with the movement of the contact support 4-11. Under the drive of the contact support 4-11, the spring contact arm 4-100 closes and opens with the second arm 5-2. It should be noted that the contact spring 4-10, contact support 4-11, and moving contact 4-12 are assembled together in a manner disclosed in the prior art, and will not be described further here.

[0074] like Figure 1-2 As shown in Figures 6-7 and 9, the operating mechanism 2 includes a mechanism support 2-1, and the power supply component 5 is fixedly mounted on the mechanism support 2-1, making assembly simple and reliable. Specifically, the power supply component 5 is fixedly mounted on the support body 2-10 of the mechanism support 2-1 (which will be described in detail later).

[0075] Furthermore, the mechanism support 2-1 also includes a conductive support side plate 2-11, which is used to connect in series to the N-pole circuit of the circuit breaker. That is, the first arm 5-1 is connected in series to the N-pole circuit of the circuit breaker through the support side plate 2-11. The first arm 5-1 is driven by the test button 6 to contact the support side plate 2-11 and become electrically connected. Specifically, when the operator performs a leakage protection function test on the circuit breaker of this utility model, the test button 6 is pressed, and the test button 6 moves to press against the first arm 5-1, so that the first arm 5-1 contacts the support side plate 2-11 and becomes electrically connected. The support side plate 2-11 serves as a component of the power-taking mechanism, allowing the circuit breaker of this utility model to cooperate with the first arm 5-1 using its inherent structure, eliminating the need for additional parts for cooperation with the first arm 5-1, reducing the number of parts and simplifying the structure of the circuit breaker. Specifically, the support side plate 2-11 is fixedly connected to the support body 2-10 of the mechanism support 2-1 (which will be described in detail later).

[0076] Furthermore, the bracket side plate 2-11 includes a side plate connecting part 2-110, which is used to connect to the N-pole circuit of the circuit breaker. Specifically, the test button 6 is movable along a third direction. In the third direction, one end of the bracket side plate 2-11 cooperates with the first arm 5-1, and the other end is provided with the side plate connecting part 2-110. The side plate connecting part 2-110 is preferably a sheet-like protrusion provided on the edge of the bracket side plate 2-11.

[0077] Furthermore, the mechanism support 2-1 also includes an insulated support body 2-10, and the power-taking component 5 is fixedly mounted on the support body 2-10. The support body 2-10 and the support side plate 2-11 are arranged side by side along the first direction. Furthermore, the power-taking component 5 is a power-taking torsion spring, which includes a helical part 5-0 and a first arm 5-1 and a second arm 5-2 respectively connected to the helical part 5-0. The power-taking component 5 is fixedly mounted on the mechanism support 2-1 by at least limiting cooperation with the mechanism support 2-1 (specifically, the support body 2-10 of the mechanism support 2-1). According to actual needs, the spiral part 5-0, the first arm 5-1, and the second arm 5-2 can be selectively matched with the bracket body 2-10 to fix the power-taking component 5 on the bracket body 2-10. That is, one, two, or three of the above three components can be matched with the mechanism bracket 2-1 (specifically the bracket body 2-10 of the mechanism bracket 2-1) to fix the power-taking component 5 on the mechanism bracket 2-1.

[0078] Furthermore, the support body 2-10 includes a positioning post 2-105, and the spiral portion 5-0 of the power-taking component 5 is sleeved on the positioning post 2-105. Furthermore, the first arm 5-1 and / or the second arm 5-2 respectively engage with the support body 2-10 for limiting their movement, at least to prevent the spiral portion 5-0 from moving axially and disengaging from the positioning post 2-105, and to prevent the spiral portion 5-0 from rotating around the positioning post 2-105. Furthermore, the axial direction of the spiral portion 5-0 of the power-taking component 5 is perpendicular to the rotational axis of the moving contact mechanism 4-1.

[0079] Specifically, in this embodiment, the first arm 5-1 and the second arm 5-2 are respectively positioned and engaged with the support body 2-10. Further, the support body 2-10 also includes a fourth limiting part 2-106. One end of the first arm 5-1 is connected to the spiral part 5-0, and the other end (i.e., the free end of the first arm 5-1) abuts against the fourth limiting part 2-106. The first arm 5-1 is in an energy storage state, and its free end tends to move towards the side where the test button 6 is located. Furthermore, the positioning and engaging of the first arm 5-1 with the fourth limiting part 2-106 also prevents the spiral part 5-0 from moving along its own axial direction and disengaging from the positioning post 2-105. The fourth limiting part 2-106 is preferably an inverted J-shaped structure, which is parallel to the positioning post 2-105 along the axial direction of the spiral part 5-0. The free end of the first arm 5-1 (i.e., the end of the first arm 5-1 away from the spiral part 5-0) is placed within the groove of the inverted J-shaped structure of the fourth limiting part 2-106. The main body 2-10 of the bracket also includes a first limiting part 2-102 and a second limiting part 2-103. The mating section 5-22 of the second arm 5-2 is located between the first limiting part 2-102 and the second limiting part 2-103 and is respectively limited and mated with them. The positioning post 2-105, the first limiting part 2-102, and the second limiting part 2-103 are arranged sequentially along the axial direction of the spiral part 5-0. The limiting and mating section 5-22 and the second limiting part 2-103 are also used to prevent the spiral part 5-0 from rotating around the positioning post 2-105 under the drive of the first arm 5-1. That is, due to the limiting and mating of the first arm 5-1 and the fourth limiting part 2-106, the spiral part 5-0 has a tendency to rotate under the action of the first arm 5-1, while the action of the mating section 5-22 and the second limiting part 2-103 prevents the spiral part 5-0 from rotating under the action of the first arm 5-1. The first limiting part 2-102 is preferably disposed at the bend of the second segment 5-21 and the mating segment 5-22 of the second arm 5-2 and respectively limits and cooperates with the second segment 5-21 and the mating segment 5-22. The second limiting part 2-103 preferably includes a right-angled groove. One side wall of the right-angled groove (denoted as the vertical side wall) is parallel to the first limiting part 2-102 along the axial direction of the spiral part 5-0 and perpendicular to the axial direction of the spiral part 5-0. The mating section 5-22 is located between the first limiting part 2-102 and the vertical side wall in the axial direction of the spiral part 5-0. The other side wall of the right-angled groove (denoted as the transverse side wall) is limited and mated with the mating section 5-22 to prevent the spiral part 5-0 from rotating around the positioning post 2-105 under the drive of the first arm 5-1. That is, the force applied to the mating section 5-22 by the transverse side wall and the force applied to the first arm 5-1 by the fourth limiting part 2-106 keep the spiral part 5-0 in a balanced state, so that the spiral part 5-0 will not rotate around the positioning post 2-105.

[0080] In another embodiment, the bracket body 2-0 may not have the fourth limiting part 2-106, and the free end of the first arm 5-1 may directly cooperate with the test button 6.

[0081] Furthermore, the main body 2-10 of the bracket includes a horizontal main body 2-100 and a vertical main body 2-101 that are bent and connected together. The vertical main body 2-101 and the side plate 2-11 of the bracket are arranged opposite each other in the first direction. One end of the horizontal main body 2-100 is bent and connected to the vertical main body 2-101 and the other end is fixedly connected to the side plate 2-100 of the bracket. The positioning post 2-105, the first limiting part 2-102, the second limiting part 2-103, and the fourth limiting part 2-106 are all arranged on the horizontal main body 2-100.

[0082] like Figure 1-2 As shown in Figures 4 and 6, this is the first implementation method of electrically connecting the power-taking component 5 to the electronic component module 9:

[0083] The free end of the second arm 5-2 of the power taking component 5 extends toward the location of the electronic component module 9 and is electrically connected to the electronic component module 9 to provide it with working power. That is, the power taking component 5 cooperates with the contact spring 4, the test button 6 and the electronic component module 9 respectively, further reducing the number of parts of the circuit breaker of this utility model and simplifying the structure of the circuit breaker of this utility model.

[0084] Furthermore, the support body 2-10 and the support side plate 2-11 are arranged side by side along the first direction, and the rotation axis direction of the moving contact mechanism 4-1 is the same as the first direction; the second arm 5-2 includes a mating section 5-22 and a second arm connecting part 5-23 (e.g., Figure 1-2 As shown, the extension direction of the mating section 5-22 is the same as the first direction and is located on one side of the moving contact mechanism 4-1. One end of the mating section 5-22 is connected to the spiral part 5-0, and the other end is bent and connected to one end of the second arm connecting part 5-23. The other end of the second arm connecting part 5-23 extends towards the location of the electronic component module 9 and is electrically connected to it. The second arm connecting part 5-23, the moving contact mechanism 4-1, the bracket body 2-10, and the bracket side plate 2-11 are arranged sequentially along the first direction. The second arm connecting part 5-23 is also used to limit the engagement with the outer shell 1, and the second arm 5-2 is limited to the engagement with the bracket body 2-10, keeping the mating section 5-22 in the working position; that is, the second arm connecting part 5-23 is limited to the engagement with the outer shell 1, and the second arm 5-2 is limited to the engagement with the bracket body 2-10. The above two limiting engagement relationships reliably keep the mating section 5-22 in the working position, so that the mating section 5-22 will not deviate from the working position under the action of the contact spring 4-10. Furthermore, one end of the second arm connecting part 5-23 is bent and connected to the mating section 5-22, and the other end is provided with a sixth connecting part 5-235. The sixth connecting part 5-235 is used to electrically connect with the electronic component module 9 and is also used to be inserted into the second limiting groove 1-1 of the housing 1.

[0085] Specifically, the second arm connecting part 5-23 includes a U-shaped connecting part second section 5-231, the outer shell 1 includes a support arm 1-2, the moving contact mechanism 4-1 is rotatably mounted on the support arm 1-2, the support arm 1-2 and the mechanism bracket 2-1 are respectively located on both sides of the moving contact mechanism 4-1 in the first direction, the support arm 1-2 is provided with a first limiting groove 1-0, the bottom end of the U-shaped structure of the connecting part second section 5-231 is inserted into the first limiting groove 1-0, at least restricting the connecting part second section 5-231 from moving towards the operating mechanism 2 along the rotation axis of the moving contact mechanism 4-1 and restricting the connecting part second section 5-231 from radially approaching or moving away from the rotation axis of the moving contact mechanism 4-1 along the rotation axis of the moving contact mechanism 4-1. The outer casing 1 is also provided with a second limiting groove 1-1. The free end of the sixth segment 5-235 of the second arm connecting part 5-23 (which will be described later) is inserted into the second limiting groove 1-1. The first limiting groove 1-0 and the second limiting groove 1-1 are located on both sides of the rotation axis of the moving contact mechanism 4-1. Further, the second arm connecting part 5-23 also includes a first connecting part 5-230. One end of the first connecting part 5-230 is perpendicularly connected to the mating part 5-22 and the other end is indirectly connected to the sixth connecting part 5-235 (which will be described later). The first connecting part 5-230 and the sixth connecting part 5-235 are arranged parallel and spaced apart and are coplanar. The sixth connecting part 5-235 extends away from the mating part 5-22. The sixth connecting part 5-235 is electrically connected to the electronic component board module 9 through the first wire 10.

[0086] The second arm connecting part 5-23 is limited to the outer shell 1 and the second arm 5-2 is limited to the support body 2-10 of the mechanism bracket 2-1, keeping the mating section 5-22 in the working position and ensuring reliable contact between the mating section 5-22 and the contact spring 4-10; the limited engagement of the second section 5-231 of the connecting part with the first limiting groove 1-0 and the limited engagement of the sixth section 5-235 of the connecting part with the second limiting groove 1-1 ensures the stability of the relative position of the second arm connecting part 5-23 with the moving contact mechanism 4-1 in the radial direction of the rotation axis of the moving contact mechanism 4-1.

[0087] like Figure 2-3As shown, this is one embodiment of the power-generating component 5: the power-generating component 5 is a torsion spring, which includes a helical part 5-0 and a first arm 5-1 and a second arm 5-2 respectively connected to the helical part 5-0. A plane is designated as a third plane p3, the axis of the helical part 5-0 is located on the third plane p3 and the third plane p3 is perpendicular to the first direction; the first arm 5-1 is a straight rod structure and is perpendicular to the axial direction of the helical part 5-0, one end is connected to the helical part 5-0, and the other end is in transmission cooperation with the test button 6; the second arm 5-2 includes a first segment 5-20, a second segment 5-21, a mating segment 5-22 and a second segment 5-21 connected in sequence. The two-arm connecting part 5-23 has the first segment 5-20 arranged perpendicular to the axis of the spiral part 5-0, and the second segment 5-21 arranged parallel to the axis of the spiral part 5-0 and located on one side of the spiral part 5-0 in the radial direction. The end of the first segment 5-20 that is bent and connected to the second segment 5-21, the end of the second segment 5-21 and the end of the first arm 5-1 that mates with the test button 6 are all located on one side of the third plane p3. The mating segment 5-22 is arranged perpendicular to the axis of the spiral part 5-0. The end of the mating segment 5-22 that is bent and connected to the second arm connecting part 5-23, and the second arm connecting part 5-23 are all located on the other side of the third plane p3.Furthermore, the second arm connecting portion 5-23 includes a first connecting segment 5-230, a second connecting segment 5-231, a third connecting segment 5-232, a fourth connecting segment 5-233, a fifth connecting segment 5-234, and a sixth connecting segment 5-235 connected in sequence. All segments of the second arm connecting portion 5-23 are coplanar (denoted as the first plane p1). The first plane p1 is parallel to the axial direction of the screw portion 5-0 and perpendicular to the rotational axis of the moving contact mechanism 4-1, that is, the first plane p1 is parallel to the third plane p3. The first connecting section 5-230 is perpendicular to the axial direction of the spiral section 5-0. One end is bent and connected to the mating section 5-22, and the other end is connected to the second connecting section 5-231. The mating section 5-22 and the first connecting section 5-230 are coplanar (denoted as the second plane p2). The second plane p2 is perpendicular to the axial direction of the spiral section 5-0. Preferably, the second plane p2 is perpendicular to the first plane p1 and the third plane p3. The second connecting section 5-231 has a U-shaped structure, and the two ends of the U-shaped structure are respectively connected to the first connecting section 5-231. 30. The third segment 5-232 of the connecting part is connected to the first segment 5-230 of the connecting part. The fourth segment 5-233 of the connecting part is perpendicular to the third segment 5-232 of the connecting part. The fifth segment 5-234 of the connecting part is perpendicular to the fourth segment 5-233 of the connecting part. The sixth segment 5-235 of the connecting part is perpendicular to the fifth segment 5-234 of the connecting part. The sixth segment 5-235 of the connecting part is used for electrical connection with the electronic component module 9 to provide it with working power. On the first plane p1, the second segment of the connecting part... The bottom end of the U-shaped structure of segment 5-231, the fourth connecting segment 5-233, the fifth connecting segment 5-234, and the sixth connecting segment 5-235 are all located on one side of the third connecting segment 5-232. The end of the first connecting segment 5-230 connected to the mating segment 5-22 is located on the other side of the third connecting segment 5-232. The spiral part 5-0, the third connecting segment 5-232, the fourth connecting segment 5-233, the fifth connecting segment 5-234, and the sixth connecting segment 5-235 are all located on one side of the second plane p2. Further, for example... Figure 6 As shown, the electronic component module 9 is located on one side of the second plane p2 and the stationary contact 4-2 is located on the other side of the second plane p2.

[0088] As another embodiment of the power-collecting component 5, the power-collecting component 5 is a structure formed by cutting and bending a metal plate with good conductivity and elasticity. It includes a power-collecting component mounting part and a first arm and a second arm respectively connected to the power-collecting component mounting part. The power-collecting component mounting part is fixed on the support body 2-10 of the mechanism support 2-1.

[0089] like Figure 7-11 The image shows a second implementation method for electrically connecting the power-taking component 5 to the electronic component module 9:

[0090] The power-gathering mechanism also includes a conductive element 8, one end of which is electrically connected to the power-gathering element 5, and the other end of which is used to extend to and electrically connect to the power-connecting terminal of the electronic component module 9, so as to provide working power to the electronic component module 9.

[0091] Furthermore, the conductive component 8 includes a conductive contact plate 8-0, which is inserted between the spiral portion 5-0 and the main horizontal portion 2-100 of the support body 2-10, with the spiral portion 5-0 and the main horizontal portion 2-100 clamped together. The conductive contact plate 8-0 is electrically connected to the spiral portion 5-0, that is, the electrical connection between the spiral portion 5-0 and the conductive contact portion 8-0 is achieved through the interference fit of the spiral portion 5-0, the conductive contact plate 8-0, and the main horizontal portion 2-100. The connection operation between the conductive component 8 and the power-taking component 5 is simple and the contact is reliable. Furthermore, the main horizontal portion 2-100 includes a horizontal plane, and the conductive contact plate 8-0 is stacked parallel to the horizontal plane, clamped by the spiral portion 5-0 and the horizontal plane. Furthermore, the conductive component 8 also includes a conductive connecting portion. One end of the conductive connecting portion is bent and connected to the conductive contact plate 8-0, and the other end is used to extend towards and electrically connect to the electronic component module 9. The conductive connecting portion is arranged between the moving contact mechanism 4-1 and the main body vertical portion 2-101 of the support body 2-10 and is in a limiting cooperation with the main body vertical portion 2-101. Furthermore, the conductive component 8 also includes a conductive component limiting portion 8-8. The conductive component limiting portion 8-8 is bent and connected to the conductive contact plate 8-0. The conductive limiting portion 8-8 and the first limiting portion 2-102 of the mechanism support 2-1 are respectively located on both sides of the second segment 5-21 of the second arm 5-2 and are respectively in a limiting cooperation with the second segment 5-21. The second segment 5-21 preferably contacts and is electrically connected to the conductive component limiting portion 8-8. Furthermore, the conductive component limiting portion 8-8 is vertically connected to the conductive contact plate 8-0, and the conductive component limiting portion 8-8 protrudes towards the side where the spiral portion 5-0 is located.

[0092] Furthermore, such as Figure 10 As shown, the spiral portion 5-0 of the power-taking component 5 and the conductive contact plate 8-0 are arranged side by side along the third direction. The spiral portion 5-0 is located on one side of the conductive contact plate 8-0 and the conductive connection portion is located on the other side of the conductive contact plate 8-0. The end of the conductive connection portion used to connect with the electronic component module 9 extends away from the spiral portion 5-0 along the third direction.

[0093] Furthermore, the conductive connection portion is inserted into the conductive plate limiting groove of the main body vertical part 2-101 along the rotation axis (i.e., the first direction) of the moving contact mechanism 4-1, which helps to improve the structural compactness of the circuit breaker. Furthermore, the conductive connection portion includes a first plate 8-1, a second plate 8-2, a third plate 8-3, a fourth plate 8-4, a fifth plate 8-5, a sixth plate 8-6, and a seventh plate 8-7 connected in sequence. The seventh plate 8-7 is also used for electrical connection with the electronic component module 9. The planes of the first plate 8-1, the second plate 8-2, the third plate 8-3, the fourth plate 8-4, the fifth plate 8-5, the sixth plate 8-6, and the seventh plate 8-7 are all parallel to the rotation axis of the moving contact mechanism 4-1. Furthermore, the conductive contact plate 8-0, the second plate 8-2, and the sixth plate 8-6 are arranged in parallel intervals. The two ends of the first plate 8-1 are perpendicularly connected to the conductive contact plate 8-0 and the second plate 8-2, respectively. The first plate 8-1 and the seventh plate 8-7 are arranged in parallel intervals. The conductive connecting plates 8-0, 8-2, 8-3, 8-4, 8-5, and 8-6 are all located between the plane of the first plate 8-1 and the plane of the seventh plate 8-7. The first plate 8-1, 8-2, 8-3, 8-4, and 8-5 are all located within the conductive connecting... Between the plane where plate 8-0 is located and the plane where the sixth plate 8-6 is located, the seventh plate 8-7 and the fifth plate 8-5 are located on both sides of the plane where the sixth plate 8-6 is located. The bending connection between the second plate 8-2 and the third plate 8-3, the bending connection between the third plate 8-3 and the fourth plate 8-4, the bending connection between the fourth plate 8-4 and the fifth plate 8-5, the bending connection between the fifth plate 8-5 and the sixth plate 8-6, and the bending connection between the sixth plate 8-6 and the seventh plate 8-7 are successively offset away from the first plate 8-1. The seventh plate 8-7 is provided with a conductive connection hole 8-70 for electrical connection with the electronic component module 9.

[0094] Furthermore, the bracket body 2-10 also includes a third limiting part 2-104, which includes a third limiting part connecting arm and a limiting block. One end of the third limiting part connecting arm is connected to the main body vertical part 2-101 of the bracket body 2-10, and the other end is provided with a limiting block. A slot is provided between the third limiting part connecting arm and the main body vertical part 2-101. The slot is used for the sixth plate 8-6 of the conductive connection part to be inserted into it along the first direction. The limiting block is matched with the sixth plate 8-6 to limit and prevent the sixth plate 8-6 from coming out of the slot along the first direction, which is conducive to further improving the reliability of the assembly of the conductive part 8 and the bracket body 2-10.

[0095] It should be noted that in the description of this utility model, the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used during use. They are only for ease of description and do not indicate that the device or component referred to must have a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating relative importance.

[0096] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the protection scope of the present invention.

Claims

1. A power extraction mechanism, characterized in that: The power-taking mechanism includes a test button (6), a power-taking component (5), and a phase contact system (4) of the circuit breaker. The phase contact system (4) includes a moving contact mechanism (4-1) and a stationary contact (4-2) that work together. The moving contact mechanism (4-1) switches between a closed position and an open position by rotation and includes a contact spring (4-10) and a moving contact (4-12) that work together and are electrically connected. The power-taking component (5) includes a first arm (5-1) and a second arm (5-2) that work together with the test button (6). The contact spring (4-10) is in contact with the second arm (5-2) when the moving contact mechanism (4-1) is in the closed position and is electrically connected to it. When the moving contact mechanism (4-1) is in the open position, it is separated from the second arm (5-2) and disconnected. The power-taking component (5) is also used to electrically connect with the electronic component module (9) of the circuit breaker to provide it with operating power.

2. The power extraction mechanism according to claim 1, characterized in that: The contact spring (4-10) is in contact with the second arm (5-2) before the moving contact (4-12) and the stationary contact (4-2) are in contact and connected, and is separated from the second arm (5-2) after the moving contact (4-12) and the stationary contact (4-2) are separated.

3. The power extraction mechanism according to claim 1, characterized in that: When the moving contact mechanism (4-1) is in the open position, the distance between the moving contact (4-12) and the stationary contact (4-2) is greater than the distance between the contact spring (4-10) and the second arm (5-2).

4. The power extraction mechanism according to claim 1, characterized in that: The contact spring (4-10) includes at least one spring contact arm (4-100), and the second arm (5-2) includes a mating section (5-22). The spring contact arm (4-100) and the mating section (5-22) are arranged in a cross shape. The spring contact arm (4-100) is in contact with the mating section (5-22) and electrically connected when the moving contact mechanism (4-1) is in the closed position, and is separated from the mating section (5-22) and disconnected when the moving contact mechanism (4-1) is in the open position.

5. The power extraction mechanism according to claim 4, characterized in that: The moving contact mechanism (4-1) further includes a contact support (4-11). The contact spring (4-10) is a torsion spring and includes two sets of spring arms. The contact spring (4-10) and the moving contact (4-12) are both mounted on the contact support (4-11). The two sets of spring arms of the contact spring (4-10) cooperate with the contact support (4-11) and the moving contact (4-12) respectively.

6. The power extraction mechanism according to claim 1, characterized in that: The power taking mechanism also includes a circuit breaker operating mechanism (2) that is connected to the moving contact mechanism (4-1) for transmission. The operating mechanism (2) is used to drive the moving contact mechanism (4-1) to rotate and close and open with the stationary contact (4-2). The operating mechanism (2) includes a mechanism support (2-1), and the power taking component (5) is fixedly mounted on the mechanism support (2-1).

7. The power extraction mechanism according to claim 6, characterized in that: The mechanism support (2-1) includes a conductive support side plate (2-11), which is used to be connected in series to the N-pole circuit of the circuit breaker. The first arm (5-1) is electrically connected to the support side plate (2-11) by the drive of the test button (6).

8. The power extraction mechanism according to claim 7, characterized in that: The power-collecting component (5) is a power-collecting torsion spring, which includes a helical part (5-0) and a first arm (5-1) and a second arm (5-2) respectively connected to the helical part (5-0).

9. The power extraction mechanism according to claim 8, characterized in that: One end of the second arm (5-2) is connected to the spiral part (5-0) and the other end is used to extend to the location of the electronic component module (9) and electrically connect to it to provide working power to the electronic component module (9).

10. The power extraction mechanism according to claim 8, characterized in that: The mechanism support (2-1) further includes an insulated support body (2-10), the support body (2-10) includes a positioning post (2-105), a spiral part (5-0) is sleeved on the positioning post (2-105), and the first arm (5-1) and / or the second arm (5-2) respectively limit the cooperation with the support body (2-10), at least to prevent the spiral part (5-0) from moving along its own axis and disengaging from the positioning post (2-105) and to prevent the spiral part (5-0) from rotating around the positioning post (2-105).

11. The power extraction mechanism according to claim 10, characterized in that: The main body of the support (2-10) includes a bent and connected horizontal main body (2-100) and a vertical main body (2-101). The vertical main body (2-101) is arranged opposite to the side plate of the support (2-11). One end of the horizontal main body (2-100) is bent and connected to the vertical main body (2-101), and the other end is fixedly connected to the side plate of the support (2-11). The positioning post (2-105) is arranged on the horizontal main body (2-100). The first arm (5-1) and the second arm (5-2) are respectively matched with the horizontal main body (2-100) to limit the movement of the spiral part (5-0) along its own axis and disengage from the positioning post (2-105) and to prevent the spiral part (5-0) from rotating around the positioning post (2-105).

12. The power extraction mechanism according to claim 10, characterized in that: The main body of the bracket (2-10) and the side plate of the bracket (2-11) are arranged side by side along the first direction. The rotation direction of the moving contact mechanism (4-1) is the same as the first direction. The second arm (5-2) includes a mating section (5-22) and a second arm connecting part (5-23). ​​The extension direction of the mating section (5-22) is the same as the first direction and is arranged on one side of the moving contact mechanism (4-1). One end of the mating section (5-22) is connected to the spiral part (5-0) and the other end is bent and connected to one end of the second arm connecting part (5-23). ​​The other end of the second arm connecting part (5-23) extends to the location of the electronic component module (9) and is electrically connected to it. The second arm connecting part (5-23), the moving contact mechanism (4-1), the main body of the bracket (2-10) and the side plate of the bracket (2-11) are arranged sequentially along the first direction.

13. The power extraction mechanism according to claim 12, characterized in that: The second arm connecting part (5-23) is also used to limit the engagement with the circuit breaker housing (1) and the second arm (5-2) is limited to the engagement with the bracket body (2-10), so as to keep the engaging section (5-22) in the working position.

14. The power extraction mechanism according to claim 13, characterized in that: One end of the second arm connecting part (5-23) is bent and connected to the mating section (5-22), and the other end is provided with a sixth connecting part (5-235). The sixth connecting part (5-235) is used to electrically connect with the electronic component module (9) and is also used to be inserted into the second limiting groove (1-1) of the outer shell (1).

15. The power extraction mechanism according to claim 14, characterized in that: The second arm connecting part (5-23) also includes a first connecting part (5-230), one end of which is perpendicularly connected to the mating part (5-22) and the other end is indirectly connected to the sixth connecting part (5-235). The first connecting part (5-230) and the sixth connecting part (5-235) are arranged in parallel and at intervals and are coplanar. The sixth connecting part (5-235) extends away from the mating part (5-22).

16. The power extraction mechanism according to claim 10, characterized in that: The power extraction mechanism also includes a conductive element (8), one end of which is electrically connected to the power extraction element (5), and the other end is used to extend to and electrically connect to the location of the electronic component module (9) to provide working power to the electronic component module (9).

17. The power extraction mechanism according to claim 16, characterized in that: The conductive component (8) includes a conductive contact plate (8-0); the main body of the bracket (2-10) includes a bent and connected horizontal main body (2-100) and a vertical main body (2-101), the vertical main body (2-101) is arranged opposite to the bracket side plate (2-11), one end of the horizontal main body (2-100) is bent and connected to the vertical main body (2-101) and the other end is fixedly connected to the bracket side plate (2-11); the horizontal main body (2-100) includes a positioning post (2-105), and a screw. The spiral part (5-0) is sleeved on the positioning post (2-105), and the first arm (5-1) and / or the second arm (5-2) are in a limiting fit with the main body horizontal part (2-100) to fix the power taking part (5) on the main body horizontal part (2-100); the conductive contact plate (8-0) is inserted between the spiral part (5-0) and the main body horizontal part (2-100) and is clamped by the spiral part (5-0) and the main body horizontal part (2-100), and the conductive contact plate (8-0) is in contact with the spiral part (5-0) for electrical connection.

18. The power extraction mechanism according to claim 16, characterized in that: The main body (2-10) and the side plate (2-11) of the bracket are arranged side by side along the first direction. The moving contact mechanism (4-1) and the side plate (2-11) of the bracket are located on both sides of the vertical part (2-101) of the main body in the first direction. The rotation axis of the moving contact mechanism (4-1) is the same as the first direction. The conductive component (8) also includes a conductive component connecting part. One end of the conductive component connecting part is bent and connected to the conductive contact plate (8-0), and the other end is used to extend to the location of the electronic component module (9) and electrically connect it. The conductive connecting part is arranged between the moving contact mechanism (4-1) and the vertical part (2-101) of the main body and is limited and cooperated with the vertical part (2-101) of the main body.

19. The power extraction mechanism according to claim 18, characterized in that: The spiral part (5-0) and the conductive contact plate (8-0) are arranged side by side along the third direction. The spiral part (5-0) is located on one side of the conductive contact plate (8-0) and the conductive connection part is located on the other side of the conductive contact plate (8-0). The end of the conductive connection part used to connect with the electronic component module (9) extends away from the spiral part (5-0) along the third direction.

20. The power extraction mechanism according to claim 18, characterized in that: The conductive component connecting part is inserted into the conductive plate limiting groove of the main body vertical part (2-101) along the first direction.

21. A circuit breaker, characterized in that: The circuit breaker includes the power extraction mechanism as described in any one of claims 1-20.

22. The circuit breaker according to claim 21, characterized in that: The circuit breaker also includes an operating mechanism (2), a leakage current tripping module (3), a zero-sequence current transformer (7), and an electronic component module (9); the operating mechanism (2) and the moving contact mechanism (4-1) are arranged side by side along a first direction, the leakage current tripping module (3) and the moving contact mechanism (4-1) are arranged side by side along a second direction, the leakage current tripping module (3) and the moving contact mechanism (4-1) are located on the same side of the mechanism support (2-1) of the operating mechanism (2) in the first direction, the leakage current tripping module (3) and the operating mechanism (2) are arranged side by side with the zero-sequence current transformer (7) in a third direction and are located on one side of the zero-sequence current transformer (7), the electronic component module (9) is arranged side by side with the zero-sequence current transformer (7) in a third direction and is located on the other side of the zero-sequence current transformer (7); the leakage current tripping module (3) and the electronic component module (9) are arranged side by side with the phase contact system (4) in the second direction; the first direction, the second direction and the third direction are perpendicular to each other.

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