Driving device of circuit breaker

Abstract

A driving device of a circuit breaker comprises a signal detection device, the signal detection device is connected with a control circuit and used for outputting a signal reflecting the rotation position of an output gear to the control circuit so as to control forward rotation, reverse rotation or stop of a motor, the driving device further comprises a trigger piece, and the output gear is provided with the trigger piece or the signal detection device. Signal detection devices or triggering pieces are arranged on the base, the output gear rotates to enable the triggering pieces and the signal detection devices to sense and send detection signals to the control circuit, at least two signal detection devices are arranged on the base, and at least two triggering pieces are correspondingly arranged on the output gear; or the base is provided with at least two triggering pieces, the output gear is provided with at least two signal detection devices, and the at least two signal detection devices comprise a mechanical position detection device and an electronic position detection device. According to the invention, the defect of singleness of a detection mode in the prior art is overcome, and the reliability of position detection is improved.

Description

Technical Field

[0001] This utility model relates to the field of low-voltage electrical appliances, specifically to a circuit breaker drive device. Background Technology

[0002] Automatic reclosing circuit breakers are now widely used in the power industry. To achieve the automatic reclosing function, the circuit breaker needs a motor to drive a gear control handle to open and close the circuit. At the same time, it is also necessary to determine the status of the product. The accuracy of the reclosing position detection is related to the reliable opening and closing of the product, which is crucial to electrical safety.

[0003] Therefore, it is evident that existing methods for reclosing position detection are limited, leading to reduced product reliability. For example, CN109308981A discloses a technical solution that uses metal scribes formed by drawing pads on a PCB to cooperate with conductive plates on a gear-shaped device. However, the casing of this product is easily deformed by high temperature and humidity, causing the conductive plates to shift. Existing technologies also include position detection through microswitches, but microswitches are prone to failure in high temperature and humidity environments. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a more reliable circuit breaker drive device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] This utility model provides a drive device for a circuit breaker, including a base, and a transmission mechanism, a control circuit, and a closing drive component installed in the base. The transmission mechanism includes a motor and an output gear driven by the motor. The control circuit is electrically connected to the motor to control the motor's operation. The output gear is driven by the closing drive component.

[0007] The driving device includes a signal detection device and a trigger. The signal detection device is connected to the control circuit and is used to output a detection signal reflecting the rotational position of the output gear to the control circuit to control the rotation of the motor. At least two types of signal detection devices are provided on the base, and at least two types of triggers are provided on the output gear; or at least two types of triggers are provided on the base, and at least two types of signal detection devices are provided on the output gear. The at least two types of signal detection devices include a mechanical position detection device and an electronic position detection device. The rotation of the output gear causes the trigger to activate the signal detection device to send a detection signal to the control circuit.

[0008] In one possible implementation, the electronic position detection device is a Hall sensor, and the trigger is a magnet. When the magnet approaches the Hall sensor, it triggers the Hall sensor to send a detection signal to the control circuit; and / or, the mechanical position detection device is a metal scriber, and the trigger is a conductive sheet. When the conductive sheet contacts the metal scriber, it conducts electricity to the circuit containing the metal scriber and sends a detection signal to the control circuit; and / or, the mechanical position detection device is a micro switch, and the trigger is a trigger protrusion. The trigger protrusion is used to trigger the micro switch to switch states and send a detection signal to the control circuit.

[0009] In one possible implementation, the mechanical position detection device is a metal scribbler, the electronic position detection device is a Hall sensor, and the circuit breaker drive device includes two trigger elements: a conductive sheet and a magnet. The conductive sheet corresponds to and cooperates with the metal scribbler. When the conductive sheet contacts the metal scribbler, it conducts a circuit containing the metal scribbler and sends a detection signal to the control circuit. The magnet corresponds to and cooperates with the Hall sensor. When the magnet approaches the Hall sensor, it triggers the Hall sensor to send a detection signal to the control circuit.

[0010] In one possible implementation, the mechanical position detection device is a micro switch, the electronic position detection device is a Hall sensor, and the circuit breaker's driving device includes two trigger elements: a trigger protrusion and a magnet. The trigger protrusion is used to trigger the micro switch to switch states and send a detection signal to the control circuit. The magnet corresponds to and cooperates with the Hall sensor. When the magnet approaches the Hall sensor, it can trigger the Hall sensor to send a detection signal to the control circuit. Alternatively, the trigger element is a magnet, which triggers the Hall sensor and simultaneously drives the micro switch to switch states.

[0011] In one possible implementation, the conductive sheet and magnet are disposed on one side of the output gear, a circuit board is disposed on the base, the metal swivel is disposed on the side of the circuit board facing the conductive sheet, and the Hall sensor is disposed on the side of the circuit board facing away from the magnet.

[0012] In one possible implementation, the conductive sheet is V-shaped and protrudes to form a first conductive protrusion and a second conductive protrusion, with a strip-shaped gap between the first and second conductive protrusions; one side of the output gear is provided with a conductive sheet groove, and a fixing rib is provided in the conductive sheet groove, and the conductive sheet is fixed to the output gear by being inserted into the fixing rib through the conductive sheet groove.

[0013] In one possible implementation, a conductive plate groove is provided on one side of the output gear, and the magnet is disposed in the conductive plate groove; a first mounting hole is provided in the conductive plate groove of the output gear, and the magnet is installed in the first mounting hole; or a first mounting groove is provided on the side of the conductive plate groove facing the Hall sensor, and the magnet is installed in the first mounting groove.

[0014] In one possible implementation, the metal swivel includes a first metal swivel and a second metal swivel, and the Hall sensor includes a first Hall sensor and a second Hall sensor; the first and second metal swivels are spaced apart on a circumference coaxial with the output gear, and the first and second Hall sensors are spaced apart on a circumference coaxial with the output gear; when the first metal swivel senses a conductive plate or the first Hall sensor senses a magnet, the control circuit controls the motor to reverse; when the second metal swivel senses a conductive plate or the second Hall sensor senses a magnet, the control circuit controls the motor to stop rotating.

[0015] In one possible implementation, the Hall sensor further includes a third Hall sensor for tripping control. The third Hall sensor is spaced apart from the first and second Hall sensors on the same circumference, and the second Hall sensor is positioned between the first and third Hall sensors. When the third Hall sensor is in the sensing position with the magnet, the motor stops running. Alternatively, the metal swivel further includes a third metal swivel, spaced apart from the first and second metal swivels on the same circumference, and the second metal swivel is positioned between the first and third metal swivels. When the third metal swivel contacts the conductive sheet, the motor stops running.

[0016] In one possible implementation, the first metal swivel includes a first swivel and a second swivel spaced apart, and the second metal swivel includes a third swivel and a fourth swivel spaced apart. The first, second, third, and fourth swivels are all arranged around the central circumference of the output gear. The first and third swivels are located on the same circumference, the second and fourth swivels are located on the same circumference, and the circumferential radius of the second swivel is larger than the circumferential radius of the first swivel.

[0017] In one possible implementation, the circuit breaker's drive mechanism further includes a tripping drive element, which is drivenly connected to the output gear. One end of the tripping drive element is rotatably mounted on the base and elastically connected to the base. The other end of the tripping drive element is located below the output gear and engages with the drive protrusion of the output gear. The drive protrusion of the output gear rotates to contact and engage with the tripping drive element to trigger tripping.

[0018] In one possible implementation, the tripping drive is elastically connected to the base via a first reset torsion spring, the spring body of the first reset torsion spring being fitted onto a protrusion on the base, and both ends being connected to the tripping drive and the base respectively.

[0019] In one possible implementation, the output gear is driven to connect with the closing drive via a transmission rod. One end of the transmission rod is connected to the output gear, and the other end extends into the track groove of the base. One end of the closing drive is rotatably mounted on the base plate and is linked to the operating handle of the circuit breaker. The other end of the closing drive is located above the track groove. The output gear can drive the transmission rod to slide along the track groove until it contacts and connects with the closing drive, thereby pushing the closing drive to swing.

[0020] In one possible implementation, the transmission rod includes a first and second arc segment in the middle, and a first and second bent segment at both ends, wherein both the first and second bent segments are inverted L-shaped structures. One end of the first bent segment is inserted and fixed to the output gear, and the other end of the first bent segment is flush with the first arc segment. The first arc segment is recessed toward the central axis of the output gear. One end of the second bent segment is inserted into the track groove, and the other end of the second bent segment is flush with the first arc segment. The second arc segment protrudes toward the central axis of the output gear.

[0021] In one possible implementation, a temperature and humidity sensor is also included, with the control circuit connected to the temperature and humidity sensor.

[0022] In one possible implementation, the circuit breaker's drive unit further includes a second switching mechanism operable by a user. The circuit board is connected to the control circuit and is equipped with a switch or button. The second switching mechanism can trigger the switch or button on the circuit board to provide a signal, switching between a detection mode using a conductive sheet and a metal swivel, a detection mode using a Hall sensor and a magnet, or a detection mode using both.

[0023] Compared with the prior art, this utility model overcomes the problems of single detection method and reduced detection reliability in the prior art by setting at least two trigger elements on the output gear and at least two signal detection devices on the base, namely a mechanical position detection device and an electronic position detection device. By using an electronic position detection device, the accuracy of the position detection of the drive device will not be affected in high temperature and high humidity environments. This application avoids the disadvantage of a single detection method, so that the drive device of the circuit breaker has the advantages of high reliability, low cost and simple structure.

[0024] Furthermore, the signal detection device can employ one detection method or a combination of multiple detection methods, such as using metal shavings and conductive sheets for detection or using a Hall sensor in conjunction with a magnet. This gives the circuit breaker's drive unit the advantages of good antimagnetism and resistance to deformation caused by high temperature and humidity in the environment.

[0025] Furthermore, by setting conductive plate grooves on the output gear and placing conductive plates and / or magnets in the conductive plate grooves, the internal space of the drive device can be effectively utilized.

[0026] Furthermore, a third Hall sensor for tripping control is spaced between the first Hall sensor and the second Hall sensor, so that they share a magnet for triggering, and / or a third metal strip for tripping control is spaced between the first metal strip and the second metal strip, so that they share a conductive strip for triggering. The closing control and tripping control do not interfere with each other, reducing the occurrence of faults and improving reliability. By setting the position, the reset and stop of each component during the closing or tripping process can be effectively controlled, improving the consistency and accuracy of the action, and the response is sensitive and highly reliable. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the back of the drive device of the circuit breaker of this utility model;

[0028] Figure 2 This is a schematic diagram of the front opening structure of the drive device of the circuit breaker of this utility model;

[0029] Figure 3 This is a schematic diagram of the front closing structure of the drive device of the circuit breaker of this utility model;

[0030] Figure 4 and Figure 5 This is a schematic diagram of the front and back of the output gear of the drive device of the circuit breaker of this utility model;

[0031] The reference numerals in the attached drawings include: base 101; transmission mechanism 102; closing drive 103; tripping drive 104; motor 105; output gear 1; operating handle 106; Hall sensor 22; magnet 32; metal swivel 21; conductive sheet 31; first metal swivel 211; second metal swivel 213; first Hall sensor 221; second Hall sensor 222; first conductive protrusion 311; second conductive protrusion 312; conductive sheet groove 11; fixing rib 12; third metal swivel 212; third Hall sensor 223; driving protrusion 14; transmission rod 13; connecting rod hole 15. Detailed Implementation

[0032] The specific embodiments of this utility model are further described below with reference to the accompanying drawings. The scope of protection of this utility model is not limited to the description of the following embodiments.

[0033] The circuit breaker in this embodiment includes circuit breaker units arranged side by side and a drive device for the circuit breaker, with the circuit breaker units and the drive device arranged side by side. For example... Figure 1-2 As shown, the drive device of the circuit breaker includes a base 101, a transmission mechanism 102, a control circuit, a closing drive 103, and a tripping drive 104 installed in the base 101. The transmission mechanism 102 includes a motor 105 and an output gear 1 driven by the motor 105. The output gear 1 is rotatably mounted, and its shaft has a mounting hole or a mounting shaft. The output gear 1 is rotatably mounted on the base 101 through the mounting hole or mounting shaft. The control circuit is electrically connected to the motor 105 to control the operation of the motor 105, driving the motor 105 to rotate forward or in reverse. The output gear 1 is driven by the closing drive 103 and the tripping drive 104, and the closing drive 103 is linked to the operating handle 106 of the circuit breaker. The operation of the tripping drive 104 can trigger the circuit breaker.

[0034] The control circuit controls the motor 105 to rotate forward, driving the output gear 1 to rotate to one side, thereby driving the closing drive 103 to swing the circuit breaker's operating handle 106 to close the circuit breaker; the control circuit controls the motor 105 to rotate in reverse, driving the output gear 1 to rotate to the other side, and the rotation of the output gear 1 drives the trip drive 104 to trigger the circuit breaker to trip and open the circuit breaker. The forward and reverse rotation of the motor 105 refers to two relative directions in the process of driving the closing and opening actions, and does not mean that the motor 105 drives the output gear 1 to rotate counterclockwise when rotating forward, and drives the output gear 1 to rotate clockwise when rotating in reverse.

[0035] The closing drive 103 and the tripping drive 104 are driven by a common transmission mechanism 102 to realize the automatic closing and opening of the circuit breaker. The structure is simple, which simplifies the control of the drive device and the structure of the transmission mechanism 102. The overall housing size is small, making it particularly suitable for miniature circuit breakers. At the same time, during the automatic closing and opening process, the closing drive 103 and the tripping drive 104 swing in two opposite directions to ensure that the closing and opening drive is reliable and orderly and does not interfere with each other.

[0036] The tripping drive 104, driven by the output gear 1, can push the tripping lever of the circuit breaker, causing the circuit breaker to complete the tripping action. The tripping lever can be a latch of the circuit breaker operating mechanism or a connecting rod for the tripping action. The closing drive 103 is linked to the operating handle 106 of the circuit breaker, which can be directly or indirectly connected. Driven by the output gear 1, it can close the circuit breaker's operating handle 106. The tripping drive 104 and the closing drive 103 are respectively linked to the positive and negative sides of the output gear 1, and the overall structure of the drive device is compact.

[0037] like Figures 1-5 As shown, this utility model provides a driving device for a circuit breaker. The driving device includes a signal detection device connected to a control circuit. The signal detection device is used to detect the position of the output gear 1 during the opening and closing process and output the detection signal to the control circuit to control the rotation of the motor 105, that is, to control the forward, reverse or stop rotation of the motor 105, thereby realizing the closing and the reset of the transmission mechanism 102 after closing. The driving device also includes a trigger. The rotation of the output gear 1 causes the trigger to trigger the signal detection device to send a detection signal to the control circuit. At least two signal detection devices are provided on the base 101 of this utility model, and at least two triggers are provided on the output gear 1. Alternatively, since the base 101 and the output gear 1 are in relative motion, at least two triggers can be provided on the base 101 and at least two signal detection devices can be provided on the output gear 1. The at least two signal detection devices include a mechanical position detection device and an electronic position detection device.

[0038] Compared with existing technologies, this utility model overcomes the problems of single detection methods and reduced detection reliability in existing technologies by setting at least two types of triggering elements on the output gear and at least two types of signal detection devices on the base, namely a mechanical position detection device and an electronic position detection device. The use of an electronic position detection device ensures that the accuracy of the drive device's position detection is not affected by high temperature and humidity environments. This application avoids the disadvantage of a single detection method, giving the circuit breaker's drive device the advantages of high reliability, low cost, and simple mechanism. The electronic position detection device refers to a signal detection device that does not require the triggering element to contact the interface; the triggering element only needs to approach to trigger the electronic position detection device to send an electronic signal. Therefore, even if the circuit breaker housing has a certain degree of deformation or displacement in a high temperature and humidity environment, it can still be triggered.

[0039] Preferably, the electronic position detection device is a Hall sensor 22, and the trigger is a magnet 32. When the magnet 32 ​​approaches the Hall sensor 22, it can trigger the Hall sensor 22 to send a detection signal to the control circuit; and / or, the mechanical position detection device is a metal scribbler 21, and the trigger is a conductive sheet 31. When the conductive sheet 31 contacts the metal scribbler 21, it conducts the circuit where the metal scribbler 21 is located and sends a detection signal to the control circuit; and / or, the mechanical position detection device is a micro switch, and the trigger is a trigger protrusion. The trigger protrusion is used to trigger the micro switch to switch states and send a detection signal to the control circuit.

[0040] The signal detection device can employ one detection method or a combination of multiple detection methods. For example, using a metal scratch 21 and a conductive sheet 31 for detection has the drawback that the product casing is easily deformed by high temperature and humidity, causing the conductive sheet 31 to shift. Using a detection method that combines a Hall sensor 22 with a magnet 32 ​​has the drawback of poor antimagnetism. However, combining the two detection methods and connecting them to the control circuit gives the circuit breaker drive device the advantages of good antimagnetism and no deformation due to high temperature and humidity. The embodiment of this application adopts the combination of the above-mentioned detection methods of metal scratch 21 and conductive sheet 31 and Hall sensor 22 and magnet 32, which has more prominent advantages.

[0041] Preferably, in this embodiment, the mechanical position detection device is a metal scribbler 21, the electronic position detection device is a Hall sensor 22, and the circuit breaker drive device includes two triggers, namely a conductive sheet 31 and a magnet 32. The conductive sheet 31 is correspondingly engaged with the metal scribbler 21, and the magnet 32 ​​is correspondingly engaged with the Hall sensor 22.

[0042] By combining the two detection methods of metal shaving plate 21 and conductive plate 31, and Hall sensor 22 and magnet 32, and connecting them in the control circuit, the circuit breaker drive device has the advantages of good antimagnetism and is not affected by high temperature and high humidity in the environment and thus does not deform.

[0043] Preferably, the mechanical position detection device is a micro switch, the electronic position detection device is a Hall sensor 22, and the circuit breaker drive device includes two trigger elements: a trigger protrusion and a magnet 32. The trigger protrusion corresponds to and cooperates with the micro switch, and the magnet 32 ​​corresponds to and cooperates with the Hall sensor 22. Alternatively, the trigger element is the magnet 32, which triggers the Hall sensor 22 to send a detection signal to the control circuit. Simultaneously, the magnet 32 ​​drives the micro switch to switch its state. The magnet 32 ​​serves as both the trigger element for the Hall sensor 22 and the trigger element for the micro switch. Combining the two detection methods—the micro switch cooperating with the trigger protrusion and the Hall sensor 22 cooperating with the magnet 32—and connecting them to the control circuit, the circuit breaker drive device has the advantages of good anti-magnetic properties and is not affected by high temperature and humidity in the environment, thus preventing deformation. In this embodiment, the trigger element may only include the magnet 32, which protrudes from the surface of the output gear 1 as a trigger protrusion. The magnet 32 ​​can be used to trigger both the Hall sensor 22 and the micro switch.

[0044] Furthermore, such as Figure 4 and Figure 5 As shown, the output gear 1 has a conductive sheet 31 and a magnet 32 ​​on one side. A circuit board is mounted on the base 101. A metal swivel 21 is located on the side of the circuit board facing the conductive sheet 31, and a Hall sensor 22 is located on the side of the circuit board facing away from the magnet 32. The control circuit is mounted on the circuit board; in this embodiment, the circuit board is a PCB board. It is electrically connected to the motor 105 to control its forward, reverse, or stop rotation. The control circuit on the circuit board can be connected to live components within the circuit breaker for power, such as the incoming and outgoing terminals of the circuit breaker. In another preferred embodiment, the control circuit on the circuit board can also output corresponding control signal lines for remote control of the circuit breaker's opening and closing. Controlling the rotation of the motor 105 via the control circuit is well-known in the art and will not be described further here. Figure 4 This is a schematic diagram of the front of the output gear 1 of this application. Figure 5 This is a schematic diagram of the back of the output gear 1 of this application.

[0045] The conductive sheet 31 and the magnet 32 ​​are mounted on the output gear 1 and can rotate together with the output gear 1. The metal slider 21 is mounted on the side of the circuit board facing the conductive sheet 31 and can directly contact the conductive sheet 31. The Hall sensor 22 is mounted on the side of the circuit board away from the output gear 1, which does not affect the rotation of the output gear 1 and can sense the magnet 32 ​​at the same time.

[0046] Preferred, such as Figure 4As shown, the conductive sheet 31 is V-shaped and protrudes to form a first conductive protrusion 311 and a second conductive protrusion 312, with a strip-shaped gap between the first conductive protrusion 311 and the second conductive protrusion 312; one side of the output gear 1 is provided with a conductive sheet groove 11, and a fixing rib 12 is provided in the conductive sheet groove 11. The conductive sheet 31 is inserted into the fixing rib 12 through the conductive sheet groove 11 and fixed to the output gear 1.

[0047] In this application, the conductive sheet 31 has good elasticity, that is, the conductive sheet 31 can also be an elastic sheet. Bending the conductive sheet 31 into a V-shape can improve the conductivity of the metal contact part.

[0048] Of course, in a degraded embodiment, the conductive sheet 31 is formed by bending a flat plate without a strip gap in the middle, which can still achieve the effect of conducting the circuit.

[0049] Preferably, one side of the output gear 1 is provided with a conductive plate groove 11. In this embodiment, the magnet 32 ​​is cylindrical and is disposed within the conductive plate groove 11. A first mounting hole is provided within the conductive plate groove 11 of the output gear 1, and the magnet 32 ​​is mounted within the first mounting hole; or, a first mounting groove is provided on the side of the conductive plate groove 11 facing the Hall sensor 22, and the magnet 32 ​​is mounted within the first mounting groove. In a preferred embodiment of this application, both the conductive plate 31 and the magnet 32 ​​are disposed within the conductive plate groove 11. By providing a conductive plate groove 11 on the output gear 1 and disposing of the conductive plate 31 and / or the magnet 32 ​​within the conductive plate groove 11, the internal space of the drive device can be effectively utilized.

[0050] In order to better sense the Hall sensor 22, the end of the magnet 32 ​​facing the Hall sensor 22 extends out of the first mounting hole or the first mounting groove.

[0051] Furthermore, such as Figure 2 and Figure 3 As shown, the metal swivel 21 includes a first metal swivel 211 and a second metal swivel 213, and the Hall sensor 22 includes a first Hall sensor 221 and a second Hall sensor 222. The first metal swivel 211 and the second metal swivel 213 are spaced apart on a circumference coaxial with the output gear 1, and the first Hall sensor 221 and the second Hall sensor 222 are spaced apart on a circumference coaxial with the output gear 1. When the first metal swivel 211 senses the conductive sheet 31 or the first Hall sensor 221 senses the magnet 32, the control circuit controls the motor 105 to reverse; when the second metal swivel 213 senses the conductive sheet 31 or the second Hall sensor 222 senses the magnet 32, the control circuit controls the motor 105 to stop rotating.

[0052] During the closing process of the circuit breaker, the conductive sheet 31 and the magnet 32 ​​rotate with the output gear 1 and move back and forth between the first metal slider 211 and the second metal slider 213, the first Hall sensor 221 and the second Hall sensor 222 respectively.

[0053] Preferred, such as Figures 1-3 As shown, the control circuit is also connected to a third metal swivel 212 and / or a third Hall sensor 223, which are used to detect the position of the output gear 1 during the tripping process and transmit the detection signal to the control circuit to control the motor 105 to stop, thereby realizing that the tripping action is completed and the motor stays at the tripping position, effectively preventing manual reclosing after arrears.

[0054] The third Hall sensor 223 is spaced apart from the first Hall sensor 221 and the second Hall sensor 222 on the same circumference, thus sharing the magnet 32 ​​for triggering. The second Hall sensor 222 is positioned between the first Hall sensor 221 and the third Hall sensor 223. Alternatively, the third metal swivel 212 is spaced apart from the first metal swivel 211 and the second metal swivel 213 on the same circumference, thus sharing the conductive sheet 31 for triggering. The second metal swivel 213 is positioned between the first metal swivel 211 and the third metal swivel 212. The two processes do not interfere with each other, reducing the occurrence of faults and improving reliability. Furthermore, the cooperation structure between the third Hall sensor 223 and / or the third metal swivel 212 and the output gear 1 is simple. When the third Hall sensor 223 and the magnet 32 ​​are in a relative position and / or the third metal swivel 212 and the conductive sheet 31 are in a relative position, the motor 105 stops running. By setting the positions, the reset and stop of each component during the closing or opening process are effectively controlled, improving the consistency and accuracy of the action, resulting in sensitive response and high reliability.

[0055] Preferably, the first metal swivel 211 includes a first swivel and a second swivel spaced apart, and the second metal swivel 213 includes a third swivel and a fourth swivel spaced apart. The first, second, third, and fourth swivels are all arranged around the central circumference of the output gear 1. The first and third swivels are located on the same circumference, as are the second and fourth swivels, and the circumferential radius of the second swivel is larger than that of the first swivel. The first and second swivels are spaced apart, forming an open circuit. When the conductive piece 31 rotates with the output gear 1 to the first and second swivels, it connects the first and second swivels, making the first metal swivel 211 conductive with the control circuit, which then controls the motor 105 to reverse. Similarly, when the conductive piece 31 rotates with the output gear 1 to the third and fourth swivels, it connects the third and fourth swivels, making the second metal swivel 213 conductive with the control circuit, which then controls the motor 105 to stop rotating. A strip-shaped gap is provided in the middle of the conductive sheet 31 to divide the conductive sheet 31 into a first conductive protrusion 311 and a second conductive protrusion 312, which can correspond to the first scribbles, the second scribbles and / or the third scribbles and the fourth scribbles, respectively. At the same time, the flexibility of the conductive sheet 31 is further improved, and the elasticity is increased. It can also reduce the friction between the conductive sheet 31 and the first metal scribbles 211 and the second metal scribbles 213, and improve the comfort of operation.

[0056] Preferably, when the third metal squaring 212 is provided, the third metal squaring 212 includes a fifth squaring and a sixth squaring. Since the interval between the third metal squaring 212 and the second metal squaring 213 is short, and the third squaring and the fifth squaring are on the same electrode, the third squaring of the second metal squaring 213 and the fifth squaring of the third metal squaring 212 can be integrally connected.

[0057] Preferably, in other possible implementations, the output gear 1 is provided with a circular conductive surface, the conductive surface and the output gear 1 are on the same central axis, and since the first sliding plate, the third sliding plate and the fifth sliding plate are on the same electrode, the first sliding plate and the third sliding plate and / or the fifth sliding plate can be replaced by the conductive surface.

[0058] The principle behind the forward and reverse rotation of motor 105 lies in changing the phase sequence of the power supply connected to motor 105. In this application, motor 105 is a single-phase motor 105, including L pole and N pole (positive and negative poles in DC motor 105). For example, when the L pole and N pole of motor 105 are connected to the L pole and N pole of external power supply respectively, motor 105 rotates forward. When the L pole and N pole of motor 105 are connected to the N pole and L pole of external power supply respectively, motor 105 will rotate in reverse. The same principle is used in this application, which will not be elaborated here.

[0059] Specifically, in one feasible implementation, the control circuit is connected to a temperature and humidity sensor to detect the ambient temperature and humidity and transmit the data to the control circuit. The control circuit is connected to two detection modes: one using a conductive sheet 31 in conjunction with a metal swivel 21, and the other using a Hall sensor 22 in conjunction with a magnet 32. The detection mode can be switched when there are significant changes in ambient temperature and humidity. Under normal conditions, such as a temperature between 10℃ and 30℃ and humidity between 35% and 75%, the equipment is less likely to be damaged. In this case, the circuit breaker's drive unit uses the detection mode of the conductive sheet 31 in conjunction with the metal swivel 21. When the environment is under high temperature and high humidity conditions, such as a temperature exceeding 40℃ and humidity exceeding 90%, the circuit breaker's drive unit switches to the detection mode, using the detection mode of the Hall sensor 22 in conjunction with the magnet 32. This prevents the product casing from deforming due to the high temperature and humidity, which could cause the conductive sheet 31 to shift.

[0060] Of course, in another feasible approach, the two detection modes can work simultaneously, the control circuit does not need to be connected to an additional temperature and humidity sensor, and there is no need to switch between detection modes, resulting in better detection performance.

[0061] The circuit breaker drive device of this utility model can also be equipped with a first switching mechanism that can be operated by the user. The first switching mechanism can trigger a switch or button on the circuit board to provide a signal and start the motor 105 to perform opening and closing operations. In addition to the first switching mechanism on the circuit breaker, the control circuit of the circuit board can also be connected to corresponding control signal lines for remote control of the opening and closing of the circuit breaker.

[0062] Preferably, the circuit breaker drive device may also be provided with a second switching mechanism that can be operated by the user. The second switching mechanism can trigger a switch or button on the circuit board to provide a signal for manual switching of the detection mode using the combination of conductive sheet 31 and metal swivel 21, or the detection mode using Hall sensor 22 and magnet 32, or the detection mode using both.

[0063] Preferably, in this embodiment of the application, because the motor 105 in this embodiment of the application has the function of forward and reverse rotation, the output gear 1 does not need to rotate a full revolution. The output gear 1 can be an incomplete gear, which can save the space inside the housing and save production costs. Of course, in other feasible embodiments, the output gear 1 can also have complete gear teeth.

[0064] Preferred, such as Figures 1-3 As shown, the transmission structure includes a transmission assembly, and the motor 105 is driven to the output gear 1 through the transmission assembly. The transmission assembly includes multiple gears.

[0065] Furthermore, the motor 105 is driven to the output gear 1 via a transmission assembly. The transmission assembly includes a worm gear driven to the motor 105, a worm wheel and a first gear arranged coaxially, and a second gear and a third gear arranged coaxially, wherein the worm gear and the worm wheel are meshed together.

[0066] Preferably, one end of the tripping drive 104 is rotatably mounted on the base 101 and elastically connected to the base 101, and the other end of the tripping drive 104 is located below the output gear 1 and engages with the drive protrusion 14 of the output gear 1. The drive protrusion 14 of the output gear 1 rotates to contact and engage with the tripping drive 104 to trigger tripping.

[0067] Furthermore, a third detection unit for tripping control is provided between the base 101 and the output gear 1. A trigger element that cooperates with the third detection unit is provided on the output gear 1. The distance from the sensing point of the trigger element and the third detection unit to the central axis of the output gear 1 is greater than the distance from the contact point of the drive protrusion 14 and the tripping drive element 104 to the central axis of the output gear.

[0068] Furthermore, the tripping drive 104 is elastically connected to the base 101 via a first reset torsion spring. The spring body of the first reset torsion spring is fitted onto the protrusion of the base 101, and its two ends are respectively connected to the tripping drive 104 and the base 101.

[0069] Preferably, the output gear 1 is driven to connect with the closing drive 103 via the transmission rod 13. One end of the transmission rod 13 is connected to the connecting rod hole 15 of the output gear 1, and the other end of the transmission rod 13 extends into the track groove of the base 101. One end of the closing drive 103 is rotatably mounted on the bottom plate of the base 101 and is linked to the operating handle 106 of the circuit breaker. The other end of the closing drive 103 is located above the track groove. The output gear 1 can drive the transmission rod 13 to slide along the track groove until it contacts and connects with the closing drive 103, thereby pushing the closing drive 103 to swing.

[0070] Furthermore, the transmission rod 13 includes a first arc segment and a second arc segment in the middle, and a first bent segment and a second bent segment at both ends. The first bent segment and the second bent segment are both inverted L-shaped structures. One end of the first bent segment is inserted and fixed to the output gear 1, and the other end of the first bent segment is flush with the first arc segment. The first arc segment is recessed towards the central axis of the output gear 1. One end of the second bent segment is inserted into the track groove, and the other end of the second bent segment is flush with the first arc segment. The second arc segment protrudes towards the central axis of the output gear 1.

[0071] Under normal conditions, the circuit breaker's drive unit operates in a detection mode where the metal swivel 21 and the conductive plate 31 work together. When the circuit breaker's drive unit drives the circuit breaker to close, the motor 105 rotates forward, driving the transmission mechanism 102. The transmission mechanism 102 drives the output gear 1 to rotate, and the output gear 1 drives the transmission rod 13 to slide along the track groove until it contacts and connects with the closing drive component 103, thereby pushing the closing drive component 103 to swing and complete the closing. When the output gear 1 rotates to the point where the conductive plate 31 contacts the first metal swivel 211, the motor 105 reverses, and the output gear 1 rotates to the point where the conductive plate 31 contacts the first metal swivel 211. When the second metal swivel 213 comes into contact, the motor 105 stops rotating and the output gear 1 returns to its initial position. When the circuit breaker's drive unit drives the circuit breaker to open, the motor 105 reverses direction, and the output gear 1 rotates in the opposite direction to when it is closed. The drive protrusion 14 of the output gear 1 rotates until it contacts the tripping drive 104 to trigger the circuit breaker to trip. The output gear 1 rotates until the conductive piece 31 contacts the third metal swivel 212, and the motor 105 rotates forward. When the output gear 1 rotates until it contacts the second metal swivel 213, the motor 105 stops rotating and the output gear 1 returns to its initial position.

[0072] Under high temperature and humidity conditions, the circuit breaker's drive unit operates in a detection mode using Hall sensor 22 and magnet 32. When the circuit breaker's drive unit drives the circuit breaker to close, motor 105 rotates forward, and output gear 1 drives transmission rod 13 to slide along the track groove until it contacts and connects with closing drive component 103, thereby pushing closing drive component 103 to swing and complete the closing. When output gear 1 rotates until magnet 32 ​​senses the first Hall sensor 221, motor 105 rotates in reverse. When output gear 1 rotates until magnet 32 ​​senses the second Hall sensor 222, the motor 105 rotates in reverse. When motor 105 stops rotating, output gear 1 returns to its initial position. When the circuit breaker's drive unit drives the circuit breaker to open, motor 105 reverses direction, and output gear 1 rotates in the opposite direction to when it is closed. The drive protrusion 14 of output gear 1 rotates until it contacts and engages with tripping drive component 104 to trigger circuit breaker tripping. Output gear 1 rotates until magnet 32 ​​senses the third Hall sensor 223, and motor 105 rotates forward. When output gear 1 rotates until magnet 32 ​​senses the second Hall sensor 222, motor 105 stops rotating, and output gear 1 returns to its initial position.

[0073] 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.

[0074] 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 drive device for a circuit breaker, comprising a base (101), a transmission mechanism (102), a control circuit, and a closing drive (103) installed in the base (101), wherein the transmission mechanism (102) comprises a motor (105) and an output gear (1) drivenly connected to the motor (105), the control circuit is electrically connected to the motor (105) to control the operation of the motor (105), and the output gear (1) is drivenly connected to the closing drive (103); The drive device also includes a signal detection device and a trigger. The signal detection device is connected to the control circuit and is used to output a detection signal reflecting the rotational position of the output gear (1) to the control circuit to control the rotation of the motor (105). Its features are, The base (101) is provided with at least two signal detection devices, and the output gear (1) is provided with at least two triggers; or the base (101) is provided with at least two triggers, and the output gear (1) is provided with at least two signal detection devices; the at least two signal detection devices include a mechanical position detection device and an electronic position detection device, and the rotation of the output gear (1) causes the triggers to trigger the signal detection devices to send detection signals to the control circuit.

2. The driving device for the circuit breaker according to claim 1, characterized in that, The electronic position detection device is a Hall sensor (22), and the trigger is a magnet (32). When the magnet (32) approaches the Hall sensor (22), it can trigger the Hall sensor (22) to send a detection signal to the control circuit. And / or, the mechanical position detection device is a metal scribbler (21), and the trigger is a conductive sheet (31). When the conductive sheet (31) contacts the metal scribbler (21), it conducts the circuit where the metal scribbler (21) is located and sends a detection signal to the control circuit. And / or, the mechanical position detection device is a micro switch, and the trigger is a trigger protrusion. The trigger protrusion is used to trigger the micro switch to switch states and send a detection signal to the control circuit.

3. The driving device for the circuit breaker according to claim 1, characterized in that, The mechanical position detection device is a metal swivel (21), the electronic position detection device is a Hall sensor (22), and the circuit breaker drive device includes two triggers, namely a conductive sheet (31) and a magnet (32). The conductive sheet (31) is in corresponding cooperation with the metal swivel (21). When the conductive sheet (31) contacts the metal swivel (21), it conducts the circuit where the metal swivel (21) is located and sends a detection signal to the control circuit. The magnet (32) is in corresponding cooperation with the Hall sensor (22). When the magnet (32) approaches the Hall sensor (22), it can trigger the Hall sensor (22) to send a detection signal to the control circuit.

4. The driving device for the circuit breaker according to claim 1, characterized in that, The mechanical position detection device is a micro switch, the electronic position detection device is a Hall sensor (22), and the circuit breaker drive device includes two triggers: a trigger protrusion and a magnet (32). The trigger protrusion is used to trigger the micro switch to switch state and send a detection signal to the control circuit. The magnet (32) corresponds to and cooperates with the Hall sensor (22). When the magnet (32) approaches the Hall sensor (22), it can trigger the Hall sensor (22) to send a detection signal to the control circuit. Alternatively, the trigger is a magnet (32), which is used to trigger the Hall sensor (22) and at the same time drives the micro switch to switch state.

5. The driving device for the circuit breaker according to claim 3, characterized in that, The output gear (1) is provided with a conductive sheet (31) and a magnet (32) on one side. A circuit board is provided on the base (101). The side of the circuit board facing the conductive sheet (31) is provided with a metal slitting plate (21). The side of the circuit board facing away from the magnet (32) is provided with a Hall sensor (22).

6. The driving device for the circuit breaker according to claim 5, characterized in that, The conductive sheet (31) is V-shaped and protrudes to form a first conductive protrusion (311) and a second conductive protrusion (312). There is a strip-shaped gap between the first conductive protrusion (311) and the second conductive protrusion (312). One side of the output gear (1) is provided with a conductive sheet groove (11). A fixing rib (12) is provided in the conductive sheet groove (11). The conductive sheet (31) is inserted into the fixing rib (12) through the conductive sheet groove (11) and fixed to the output gear (1).

7. The driving device for a circuit breaker according to claim 5, characterized in that, One side of the output gear (1) is provided with a conductive plate groove (11), and the magnet (32) is disposed in the conductive plate groove (11); the conductive plate groove (11) of the output gear (1) is provided with a first mounting hole, and the magnet (32) is installed in the first mounting hole; or the side of the conductive plate groove (11) facing the Hall sensor (22) is provided with a first mounting groove, and the magnet (32) is installed in the first mounting groove.

8. The driving device for the circuit breaker according to claim 3, characterized in that, The metal swivel (21) includes a first metal swivel (211) and a second metal swivel (213), and the Hall sensor (22) includes a first Hall sensor (221) and a second Hall sensor (222). The first metal swivel (211) and the second metal swivel (213) are spaced apart on a circumference coaxial with the output gear (1), and the first Hall sensor (221) and the second Hall sensor (222) are spaced apart on a circumference coaxial with the output gear (1). When the first metal swivel (211) senses the conductive sheet (31) or the first Hall sensor (221) senses the magnet (32), the control circuit controls the motor (105) to reverse. When the second metal swivel (213) senses the conductive sheet (31) or the second Hall sensor (222) senses the magnet (32), the control circuit controls the motor (105) to stop rotating.

9. The driving device for a circuit breaker according to claim 8, characterized in that, The Hall sensor (22) further includes a third Hall sensor (223) for tripping control. The third Hall sensor (223) is spaced apart from the first Hall sensor (221) and the second Hall sensor (222) on the same circumference, and the second Hall sensor (222) is located between the first Hall sensor (221) and the third Hall sensor (223). When the third Hall sensor (223) is in the sensing position with the magnet (32), the motor (105) stops running. And / or, the metal swivel (21) further includes a third metal swivel (212). The third metal swivel (212) is spaced apart from the first metal swivel (211) and the second metal swivel (213) on the same circumference, and the second metal swivel (213) is located between the first metal swivel (211) and the third metal swivel (212). When the third metal swivel (212) contacts the conductive sheet (31), the motor (105) stops running.

10. The driving device for a circuit breaker according to claim 8, characterized in that, The first metal slider (211) includes a first slider and a second slider arranged at intervals, and the second metal slider (213) includes a third slider and a fourth slider arranged at intervals. The first slider, the second slider, the third slider and the fourth slider are all arranged around the central circumference of the output gear (1). The first slider and the third slider are located on the same circumference, the second slider and the fourth slider are located on the same circumference, and the circumferential radius of the second slider is greater than the circumferential radius of the first slider.

11. The driving device for a circuit breaker according to claim 1, characterized in that, The circuit breaker's drive device also includes a tripping drive (104), which is drivenly connected to the output gear (1). One end of the tripping drive (104) is rotatably mounted on the base (101) and elastically connected to the base (101). The other end of the tripping drive (104) is located below the output gear (1) and engages with the drive protrusion (14) of the output gear (1). The drive protrusion (14) of the output gear (1) rotates to contact and engage with the tripping drive (104) to trigger tripping.

12. The driving device for a circuit breaker according to claim 11, characterized in that, The tripping drive (104) is elastically connected to the base (101) through a first reset torsion spring. The spring body of the first reset torsion spring is fitted on the protrusion of the base (101), and its two ends are respectively connected to the tripping drive (104) and the base (101).

13. The driving device for the circuit breaker according to claim 1, characterized in that, The output gear (1) is driven to connect with the closing drive (103) via the transmission rod (13). One end of the transmission rod (13) is connected to the output gear (1), and the other end of the transmission rod (13) extends into the track groove of the base (101). One end of the closing drive (103) is rotatably mounted on the bottom plate of the base (101) and is linked to the operating handle (106) of the circuit breaker. The other end of the closing drive (103) is located above the track groove. The output gear (1) can drive the transmission rod (13) to slide along the track groove until it contacts the closing drive (103), thereby pushing the closing drive (103) to swing.

14. The drive device for the circuit breaker according to claim 13, characterized in that, The transmission rod (13) includes a first arc segment and a second arc segment in the middle, and a first bent segment and a second bent segment at both ends. The first bent segment and the second bent segment are both inverted L-shaped structures. One end of the first bent segment is inserted and fixed on the output gear (1), and the other end of the first bent segment is flush with the first arc segment. The first arc segment is recessed toward the central axis of the output gear (1). One end of the second bent segment is inserted into the track groove, and the other end of the second bent segment is flush with the first arc segment. The second arc segment protrudes toward the central axis of the output gear (1).

15. The driving device for a circuit breaker according to claim 1, characterized in that, It also includes a temperature and humidity sensor, and the control circuit is connected to the temperature and humidity sensor.

16. The driving device for a circuit breaker according to claim 5, characterized in that, The circuit breaker's drive device also includes a second switching mechanism that can be operated by the user. The circuit board is connected to the control circuit and is equipped with a switch or button. The second switching mechanism can trigger the switch or button on the circuit board to provide a signal and switch between detection modes using a conductive sheet (31) and a metal swivel (21), or a Hall sensor (22) and a magnet (32), or a detection mode using both.

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