A circuit breaker for easy signal conversion and transmission

Abstract

The present invention discloses a circuit breaker that is easy to convert and transmit signals, and specifically relates to the technical field of circuit breakers, including a protective cover, a conversion assembly is arranged on the protective cover, and the conversion assembly includes a distributor arranged at the bottom of the inner cavity of the protective cover, and a mounting groove is opened at the bottom of the distributor, and a reinforced superconducting pin is slidably connected to the middle of the mounting groove. The present invention realizes the function of controlling and converting and transmitting the state signal of the circuit by adjusting the position of the reinforced superconducting pin and the signal transmission sleeve to synchronously transmit the signal to each first wiring pin or above a single first wiring pin, and can closely fit with the copper busbar through the release lining to avoid the phenomenon of short circuit of the signal after conversion and transmission, and can quickly and accurately transmit the circuit or signal to different wires, realize the function of forced conversion, and avoid the occurrence of inaccurate signal transmission.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit breakers, and more particularly to a circuit breaker that facilitates signal conversion and transmission. Background Art

[0002] A circuit breaker is a switching device used to close, carry, and interrupt current under normal and abnormal circuit conditions. It primarily consists of a contact system, arc extinguishing system, operating mechanism, trip unit, and enclosure. Depending on their intended use, they are categorized as high-voltage or low-voltage circuit breakers. Circuit breakers play a crucial role in power transmission and utilization, preventing damage to circuits and equipment caused by excessive voltage loads. If excessive current or a fault such as a short circuit or undervoltage occurs, the circuit breaker automatically disconnects the circuit to ensure safety.

[0003] Among them, the patent publication number CN118299234A discloses a circuit breaker overvoltage and undervoltage protection mechanism and a remote control circuit breaker system, including a housing, a circuit board installed inside the housing, a fixed contact fixedly mounted on the circuit board, a quick on-off mechanism provided at the bottom of the fixed contact, a limit mechanism provided at the top of the quick on-off mechanism, the quick on-off mechanism including a support seat, a guide vertical rod fixedly connected to the top of the support seat, a movable sleeve slidably connected to the guide vertical rod, a connecting plate fixedly connected to the outside of the movable sleeve, movable contact block assemblies fixedly connected at both ends of the connecting plate, and a first spring on both sides of the support seat, belonging to the field of circuit breaker technology;

[0004] The circuit breaker uses an undervoltage protection mechanism and a remote-controlled circuit breaker system, and quickly completes the on-off action through a fast on-off mechanism in conjunction with a limit mechanism and fixed contacts. It can also remain fixed after the on-off action without continuous power supply, improving the action speed and on-off sensitivity. However, the circuit breaker is in the power system. In order to achieve effective control and protection of the circuit, the circuit status signal (such as current level, fault signal, etc.) needs to be converted and transmitted to monitor and control the circuit operation status in a timely manner. This process is crucial to ensure the stable operation and safety of the power system. When in use, this structure cannot forcibly convert between different transmission states, resulting in inaccurate circuit or signal transmission conversion. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a circuit breaker that facilitates signal conversion and transmission, aiming to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a circuit breaker that facilitates signal conversion and transmission, comprising a protective cover, wherein a conversion assembly is provided on the protective cover;

[0007] The conversion assembly includes a distributor arranged at the bottom of the inner cavity of the protective cover. The bottom of the distributor is provided with a mounting groove. A reinforced superconducting pin is slidably connected to the middle of the mounting groove. The top of the reinforced superconducting pin passes through the mounting groove and extends to the top of the distributor. First wiring pins are provided on both sides of the reinforced superconducting pin. The first wiring pins are located in the mounting groove and clamped with the mounting groove. The outer side of the reinforced superconducting pin is provided with a plurality of signal transmission sleeves.

[0008] It can be seen that in the above technical solution, the reinforced superconducting pin serves as the main signal transmission carrier. The displacement of the reinforced superconducting pin drives the displacement of each signal transmission sleeve, so that each signal transmission sleeve contacts the corresponding first wiring pin one by one, and transmits the signal source to the first wiring pin. By adjusting the position of the reinforced superconducting pin and the signal transmission sleeve, the signal is synchronously transmitted to each first wiring pin or a single first wiring pin, thereby realizing the function of controlling and converting and transmitting the circuit status signal.

[0009] A central bracket is installed on the top of the distributor by bolts, and a deflection member is rotatably connected to one side of the central bracket. A reinforcing arc pin is provided at the bottom of the deflection member. The vertical cross-section of the reinforcing arc pin is arc-shaped, and the bottom of the reinforcing arc pin extends to the top of the reinforcing superconducting pin. A conductive block is fixedly provided on one side of the reinforcing arc pin. A knob is threadedly connected to one side of the top of the protective cover. A nylon pressure rod is fixedly provided at the bottom of the knob. The nylon pressure rod extends to one side of the top of the deflection member. A limit spring hook is hooked on one side of the deflection member, and one end of the limit spring hook is hooked on the central bracket. The cam is fixed on the bottom of the traction plate, and the bottom of the traction plate is fixedly provided with a spring rod, and the bottom end of the spring rod is slidably connected to the distributor, and the traction plate is slidably connected to an inclined rod, and one end of the inclined rod is rotatably connected to a triangular piece through an axle pin, and the triangular piece is rotatably connected to the center bracket through an axle pin, and one side of the triangular piece is slidably connected to a limit hook, and the top of the limit hook is provided with a spring compression torsion, and the spring compression torsion is installed on the top of the protective cover.

[0010] It can be seen that in the above technical solution, pressing the positioning rod drives the traction plate and the spring rod to move downward. The spring rod is limited by the distributor to compress the spring on it. The displacement of the traction plate will cause the traction force of the inclined rod through the displacement of the traction plate to drive the triangular part to deflect. When the triangular part deflects, it will drive the horizontal axis to rotate, and then the conductive head and the tripping lining will deflect, and the circuit status signal will be transmitted to the copper bus, the reinforcing guide rod and the second wiring pin, realizing different signal conversion and transmission functions according to needs.

[0011] One side of the central bracket is rotatably connected to a horizontal axis, and the horizontal axis is located at the bottom of the limit hook and the triangle. A slot is provided on the horizontal axis, and a release liner is fixedly provided at one end of the horizontal axis, and a conduction head is fixedly provided on the release liner. A copper bus is provided at the end of the release liner away from the conduction head, and the copper bus is installed on the central bracket. A second wiring pin that is clamped with the central bracket is provided at the bottom of the copper bus, and a reinforcing guide rod is inserted at one end of the copper bus. A transfer guide frame is provided on one side of the bottom of the conduction block, and one end of the transfer guide frame is inserted on the release liner. A third wiring pin is provided at the bottom of the transfer guide frame, and the third wiring pin is installed on the distributor. The outer sides of the third wiring pin and the transfer guide frame are both provided with arc extinguishing covers, and the arc extinguishing covers are clamped on the distributor.

[0012] It can be seen that in the above technical solution, the reinforced superconducting pin is in contact with the reinforced arc pin. The reinforced arc pin is subjected to force to drive the deflection member to rotate and make the conductive block deflect to the transfer guide frame and contact the transfer guide frame. The transfer guide frame acts as a "transfer station" to transmit the signal to the third wiring pin, realizing the function of converting and transmitting the status signal of the circuit. After the horizontal axis is deflected, the spring is pressed and twisted to drive the limit hook to move downward, and the bottom of the limit hook is stuck in the card slot, limiting the horizontal axis, and then limiting the release lining and the conductive head, so that the release lining can fit tightly with the copper busbar, avoiding the short circuit of the signal after conversion and transmission, and ensuring the stability of the circuit signal during transmission.

[0013] The technical effects and advantages of the present invention are as follows:

[0014] 1. The present invention utilizes a reinforced superconducting pin as the primary signal transmission carrier. The displacement of the reinforced superconducting pin drives the displacement of each signal transmission sleeve, allowing each sleeve to contact its corresponding first connection pin one by one, transmitting the signal source to the corresponding first connection pin. By adjusting the position of the reinforced superconducting pin and the signal transmission sleeve, the signal can be synchronously transmitted to each first connection pin or a single first connection pin, achieving the functions of controlling, converting, and transmitting circuit status signals.

[0015] 2. The present invention strengthens the arc pin force to drive the deflection member to rotate and deflect the conductive block to the transfer guide frame and contact the transfer guide frame. The transfer guide frame acts as a "transfer station" to transmit the signal to the third wiring pin, realizing the function of converting and transmitting the circuit status signal;

[0016] 3. The spring rod of the present invention is limited by the distributor and compressed. The displacement of the traction plate causes the inclined rod to drive the triangle to deflect through the traction force of the traction plate. The deflection of the triangle causes the horizontal axis to rotate, which in turn causes the conductive head and the tripping lining to deflect, transmitting the circuit status signal to the copper busbar, the reinforcing guide rod and the second wiring pin, realizing different signal conversion and transmission functions according to needs.

[0017] 4. The present invention drives the limit hook downward by pressing and twisting the spring, and makes the bottom of the limit hook stuck in the slot, limiting the horizontal axis, and then limiting the release lining and the conductive head, so that the release lining can fit tightly with the copper busbar, avoiding the short circuit phenomenon after the signal is converted and transmitted, and ensuring the stability of the circuit signal transmission;

[0018] To summarize, by using the various structures in coordination with each other and adjusting the positions of the reinforced superconducting pins and the signal transmission sleeve, the signal can be synchronously transmitted to each first wiring pin or above a single first wiring pin, thereby realizing the function of controlling and converting and transmitting the circuit status signal. When the triangle is deflected, the horizontal axis will be rotated, thereby deflecting the conductive head and the tripping liner, and the circuit status signal will be transmitted to the copper busbar, the reinforced guide rod and the second wiring pin, thereby realizing different signal conversion and transmission functions according to needs. The tripping liner can fit tightly with the copper busbar to avoid short circuit of the signal after conversion and transmission. The circuit or signal can be quickly and accurately transmitted to different wires, realizing the function of forced conversion and avoiding inaccurate signal transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] To more clearly illustrate the technical solutions of the present invention, the following briefly introduces the drawings required for use in some embodiments of the present invention. Obviously, the drawings described below are only drawings of some embodiments of the present invention, and those skilled in the art can also derive other drawings based on these drawings. Furthermore, the drawings described below should be viewed as schematic diagrams and are not intended to limit the actual dimensions of the products, actual processes of the methods, actual timing of signals, and the like involved in the embodiments of the present invention.

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 This is a three-dimensional diagram of the conversion assembly of the present invention installed in the protective cover.

[0022] Figure 3 It is a three-dimensional diagram of the distributor and arc extinguishing cover of the present invention.

[0023] Figure 4 It is a side view of the conversion assembly of the present invention.

[0024] Figure 5 For the present invention Figure 4 Schematic diagram of the back structure.

[0025] Figure 6 This is a three-dimensional diagram of the superconducting pin, the first connection pin and the signal transmission sleeve of the present invention.

[0026] Figure 7 It is a three-dimensional diagram of the transfer guide frame and the third connection pin of the present invention.

[0027] Figure 8 It is a three-dimensional view of the positioning rod, spring rod and release liner of the present invention.

[0028] Figure 9 It is a three-dimensional diagram of the limit hook, triangular piece, horizontal axis, release lining and conductive head of the present invention.

[0029] Figure 10 It is a three-dimensional diagram of the copper busbar, the second connection pin, the reinforcing guide rod, the central bracket, the deflection member and the nylon pressure rod of the present invention.

[0030] The accompanying drawings are marked as follows: 1, protective cover; 101, distributor; 102, mounting slot; 103, first connection pin; 104, reinforced superconducting pin; 105, signal transmission sleeve;

[0031] 2. Center bracket; 201. Deflection member; 202. Arc reinforcement pin; 203. Conducting block; 204. Knob; 205. Nylon pressure rod; 206. Limit spring hook; 207. Positioning rod; 208. Pull plate; 209. Spring rod; 210. Diagonal rod; 211. Spring compression and twisting; 212. Limit hook; 213. Triangular member;

[0032] 3. Horizontal axis; 301. Card slot; 302. Conducting head; 303. Trip lining; 304. Copper busbar; 305. Second connection pin; 306. Strengthening guide rod; 307. Transfer guide frame; 308. Third connection pin; 309. Arc extinguishing cover. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] The terms "first", "second" and "third" in the embodiments of the present application are only used for descriptive purposes and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second" and "third" may explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but may optionally also include steps or units that are not listed, or may optionally also include other steps or units inherent to these processes, methods, products or devices.

[0035] References to "embodiments" herein mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0036] As attached Figure 1 - Figure 10 The circuit breaker shown here is easy to convert and transmit signals. By adjusting the positions of the reinforced superconducting pins 104 and the signal transmission sleeve 105 through a conversion assembly provided on the protective cover 1, signals are synchronously transmitted to each first connection pin 103 or a single first connection pin 103, thereby controlling and converting and transmitting circuit status signals. When the triangular member 213 deflects, it causes the horizontal axis 3 to rotate, thereby deflecting the conductive head 302 and the tripping liner 303, transmitting the circuit status signal to the copper busbar 304, the reinforced guide rod 306, and the second connection pin 305, thereby achieving different signal conversion and transmission functions according to needs. The tripping liner 303 can tightly fit with the copper busbar 304 to prevent short circuits after signal conversion and transmission. Circuits or signals can be quickly and accurately transmitted to different conductors, achieving a mandatory conversion function and avoiding inaccurate signal transmission. The specific structural configuration of the assembly is as follows;

[0037] The conversion assembly includes a distributor 101 disposed at the bottom of the inner cavity of the protective cover 1. A mounting slot 102 is defined at the bottom of the distributor 101. A reinforced superconducting pin 104 is slidably connected to the middle of the mounting slot 102. The top of the reinforced superconducting pin 104 passes through the mounting slot 102 and extends to the top of the distributor 101. First connection pins 103 are provided on both sides of the reinforced superconducting pin 104. The first connection pins 103 are located in the mounting slot 102 and are engaged with the mounting slot 102. Several signal transmission sleeves 105 are provided on the outer side of the reinforced superconducting pin 104.

[0038] The top of the distributor 101 is fixed with a central bracket 2 by bolts. A deflection member 201 is rotatably connected to one side of the central bracket 2. A reinforcing arc pin 202 is provided at the bottom of the deflection member 201. The vertical cross-section of the reinforcing arc pin 202 is arc-shaped, and the bottom of the reinforcing arc pin 202 extends to the top of the reinforcing superconducting pin 104. A conductive block 203 is fixedly provided on one side of the reinforcing arc pin 202. A knob 204 is threadedly connected to one side of the top of the protective cover 1. A nylon pressure rod 205 is fixedly provided at the bottom of the knob 204. The nylon pressure rod 205 extends to one side of the top of the deflection member 201. A limit spring hook 206 is hooked on one side of the deflection member 201. One end of the limit spring hook 206 is hooked on the central bracket 2. A positioning rod 207 is provided on one side of the button 204. The positioning rod 207 is inserted into the protective cover 1 and is slidably connected to the protective cover 1. A traction plate 208 located inside the protective cover 1 is fixedly provided at the bottom of the positioning rod 207. A spring rod 209 is fixedly provided at the bottom of the traction plate 208. The bottom end of the spring rod 209 is slidably connected to the distributor 101. A diagonal rod 210 is slidably connected to the traction plate 208. One end of the diagonal rod 210 is rotatably connected to a triangular piece 213 through an axle pin. The triangular piece 213 is rotatably connected to the center bracket 2 through an axle pin. One side of the triangular piece 213 is slidably connected to a limiting hook 212. The top of the limiting hook 212 is provided with a spring compression torsion 211, and the spring compression torsion 211 is installed on the top of the protective cover 1.

[0039] One side of the center bracket 2 is rotatably connected to a horizontal shaft 3, which is located at the bottom of the limit hook 212 and the triangular piece 213. A card slot 301 is provided on the horizontal shaft 3, and a release liner 303 is fixedly provided at one end of the horizontal shaft 3. A conductive head 302 is fixedly provided on the release liner 303. A copper bus 304 is provided at the end of the release liner 303 away from the conductive head 302. The copper bus 304 is installed on the center bracket 2, and a second wiring pin 300 is provided at the bottom of the copper bus 304 to be clamped with the center bracket 2. 5. A reinforcing guide rod 306 is inserted into one end of the copper busbar 304. A transfer guide frame 307 is provided on one side of the bottom of the conductive block 203. One end of the transfer guide frame 307 is inserted into the tripping liner 303. A third wiring pin 308 is provided at the bottom of the transfer guide frame 307. The third wiring pin 308 is mounted on the distributor 101. The outer sides of the third wiring pin 308 and the transfer guide frame 307 are both provided with an arc extinguishing cover 309, which is snapped onto the distributor 101.

[0040] When using the above structure, the staff installs the device at a designated location. When wiring, different wires are connected to the corresponding first wiring pin 103, second wiring pin 305, and third wiring pin 308 respectively. When the device is plugged into a circuit or electrical equipment, the reinforced superconducting pin 104 serves as the main signal transmission carrier. When the device is plugged into the electrical equipment, the reinforced superconducting pin 104 is blocked and extends to the top of the distributor 101, and at the same time, it drives each signal transmission sleeve 105 to move, so that each signal transmission sleeve 105 contacts the corresponding first wiring pin 103 one by one, and transmits the signal source to the first wiring pin 103. By adjusting the position of the reinforced superconducting pin 104 and the signal transmission sleeve 105, the signal is synchronously transmitted to each first wiring pin 103 or above a single first wiring pin 103, thereby realizing the function of controlling and converting and transmitting the circuit status signal.

[0041] At the same time, when the reinforced superconducting pin 104 moves upward, it contacts the reinforced arc pin 202. The reinforced arc pin 202 is subjected to the force to drive the deflection member 201 to rotate and cause the conductive block 203 to deflect onto the transfer guide frame 307 and contact the transfer guide frame 307. The transfer guide frame 307 acts as a "transfer station" to transmit the signal to the third connection pin 308, thereby realizing the function of converting and transmitting the circuit status signal.

[0042] And pressing the positioning rod 207 drives the traction plate 208 and the spring rod 209 to move downward. The spring rod 209 is limited by the distributor 101 so that the spring on it is compressed. The displacement of the traction plate 208 causes the inclined rod 210 to drive the triangular piece 213 to deflect through the traction force of the displacement of the traction plate 208. When the triangular piece 213 deflects, it drives the horizontal axis 3 to rotate, and then deflects the conductive head 302 and the tripping lining 303, and transmits the circuit status signal to the copper bus 304, the reinforcing guide rod 306 and the second wiring pin 305, realizing different signal conversion and transmission functions according to needs.

[0043] And when the horizontal axis 3 is deflected, the spring compression button 211 is pressed to drive the limit hook 212 to move downward, and the bottom of the limit hook 212 is stuck in the card slot 301, limiting the horizontal axis 3, and then limiting the release lining 303 and the conductive head 302, so that the release lining 303 can fit tightly with the copper bus 304, avoiding the short circuit phenomenon of the signal after conversion and transmission, and ensuring the stability of the circuit signal during transmission.

[0044] Different from the prior art, the present application discloses a circuit breaker that facilitates signal conversion and transmission. By adjusting the position of the reinforced superconducting pin 104 and the signal transmission sleeve 105, the signal is synchronously transmitted to each first wiring pin 103 or above a single first wiring pin 103, thereby realizing the function of controlling and converting and transmitting the circuit status signal. When the triangular piece 213 is deflected, it will rotate the horizontal axis 3, thereby deflecting the conductive head 302 and the tripping liner 303, and transmitting the circuit status signal to the copper busbar 304, the reinforced guide rod 306 and the second wiring pin 305, realizing different signal conversion and transmission functions according to needs. The tripping liner 303 can fit tightly with the copper busbar 304 to avoid short circuits after signal conversion and transmission. The circuit or signal can be quickly and accurately transmitted to different wires, realizing the function of forced conversion and avoiding the problem of inaccurate signal transmission.

[0045] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A circuit breaker for easy signal conversion and transmission, comprising a protective cover, characterized in that: The protective cover is provided with a conversion component; The conversion assembly includes a distributor arranged at the bottom of the inner cavity of the protective cover, the bottom of the distributor is provided with a mounting groove, the middle of the mounting groove is slidably connected with a reinforced superconducting pin, the top of the reinforced superconducting pin passes through the mounting groove and extends to the top of the distributor; A central bracket is installed on the top of the distributor by bolts, a deflection member is rotatably connected to one side of the central bracket, a reinforcing arc pin is arranged at the bottom of the deflection member, the vertical cross-section of the reinforcing arc pin is in an arc shape, and the bottom of the reinforcing arc pin extends to the top of the reinforcing superconducting pin, a conductive block is fixedly arranged on one side of the reinforcing arc pin, a knob is threadedly connected to one side of the top of the protective cover, a nylon pressure rod is fixedly arranged at the bottom of the knob, the nylon pressure rod extends to one side of the top of the deflection member, a limit spring hook is hooked on one side of the deflection member, and one end of the limit spring hook is hooked on the central bracket; A positioning rod is provided on one side of the knob, the positioning rod is plugged into the protective cover and slidably connected to the protective cover, and a traction plate located inside the protective cover is fixedly provided at the bottom of the positioning rod; A spring rod is fixedly arranged at the bottom of the traction plate, the bottom end of the spring rod is slidably connected to the distributor, and a diagonal tie rod is slidably connected to the traction plate; One end of the inclined tie rod is rotatably connected to a triangular piece through an axle pin, the triangular piece is rotatably connected to the central bracket through an axle pin, one side of the triangular piece is slidably connected to a limit hook, the top of the limit hook is provided with a spring compression torsion, and the spring compression torsion is installed on the top of the protective cover; First connection pins are arranged on both sides of the reinforced superconducting pin, the first connection pins are located in the mounting groove and are clamped with the mounting groove, and a plurality of signal transmission sleeves are arranged on the outer side of the reinforced superconducting pin.

2. The circuit breaker for easy signal conversion and transmission according to claim 1, characterized in that: One side of the central support is rotatably connected with a transverse axis, the transverse axis is located at the bottom of the limiting hook and the triangular piece, and a clamping slot is provided on the transverse axis.

3. The circuit breaker for easy signal conversion and transmission according to claim 2, characterized in that: A release liner is fixedly arranged at one end of the horizontal axis, and a conductive head is fixedly arranged on the release liner.

4. The circuit breaker for easy signal conversion and transmission according to claim 3, characterized in that: A copper bar is arranged at one end of the release liner away from the conductive head, the copper bar is mounted on the central bracket, a second wiring pin is arranged at the bottom of the copper bar and is clamped with the central bracket, and a reinforcing guide rod is inserted at one end of the copper bar.

5. The circuit breaker for easy signal conversion and transmission according to claim 1, characterized in that: A transfer guide frame is arranged on one side of the bottom of the conduction block, one end of the transfer guide frame is plugged into the release liner, and a third wiring pin is arranged on the bottom of the transfer guide frame, and the third wiring pin is installed on the distributor.

6. The circuit breaker for easy signal conversion and transmission according to claim 5, characterized in that: The outer sides of the third connection pin and the transfer guide frame are both sleeved with arc extinguishing covers, and the arc extinguishing covers are clamped on the distributor.

Images