Self-release structure, reclosing mechanism and circuit breaker

Abstract

This application relates to the technical field of circuit breakers, specifically to a self-disengaging structure, reclosing mechanism, and circuit breaker, which includes a rotating component, a ratchet, and multiple balls. The rotating component and the ratchet can rotate independently and coaxially. The rotating component has a rotating groove for mounting the ratchet. Adjacent ratchet teeth of the ratchet form a receiving space for accommodating different balls. The two surfaces of the ratchet teeth are a pushing surface and a locking surface, respectively. The ratchet can rotate until the pushing surface abuts against the pushing ball, and the ratchet can also rotate in the opposite direction until the locking surface presses the ball against the groove wall of the rotating groove.

Description

Technical Field

[0001] This application relates to the field of circuit breakers, and in particular to a self-disengaging structure, a reclosing mechanism, and a circuit breaker. Background Technology

[0002] A circuit breaker is a basic and important switching device. It can not only connect and disconnect current like an ordinary switch, but more importantly, it can automatically trip and disconnect the circuit when abnormal conditions such as overload or short circuit occur in the circuit, thereby protecting the lines, power equipment and personal safety.

[0003] In related technologies, circuit breakers include reclosing mechanisms, which consist of a crank-connecting rod mechanism, a drive motor, an operating lever, and at least two gears. The drive motor drives the circuit breaker handle for reclosing via the crank-connecting rod mechanism. One gear is fixedly connected to the output shaft of the drive motor, and another gear is fixedly connected to the operating lever. All gears are meshed together. Operators can also manually rotate the operating lever to reclose the circuit breaker handle, thus providing both manual and electric reclosing modes. However, when using manual reclosing, the motor's output shaft rotates along with the circuit breaker, making operation laborious and potentially damaging to the motor. Summary of the Invention

[0004] To make operation easier, this application provides a self-disengaging structure, a reclosing mechanism, and a circuit breaker.

[0005] This application provides a self-disengaging structure, reclosing mechanism, and circuit breaker, which adopts the following technical solution: A self-detaching structure includes a rotating component, a ratchet, and multiple balls. The rotating component and the ratchet can rotate independently and coaxially. The rotating component has a rotating groove for mounting the ratchet. Adjacent ratchet teeth of the ratchet form a receiving space for accommodating different balls. The two sides of the ratchet teeth are a pushing surface and a locking surface, respectively. The ratchet can rotate until the pushing surface abuts against the pushing ball, and the ratchet can also rotate in the opposite direction until the locking surface presses the ball against the groove wall of the rotating groove.

[0006] By adopting the above technical solution, a cooperative structure is set up for the rotating component, ratchet, and multiple balls. When the ratchet rotates in the reverse direction, the locking surface can press the balls against the groove wall of the rotating slot, thereby achieving a lock between the rotating component and the ratchet. The ratchet can drive the rotating component to rotate synchronously. When the ratchet rotates in the forward direction, the pushing surface pushes the balls to move, causing the balls to disengage from the pressed state, thus achieving automatic disengagement between the rotating component and the ratchet, with only the ratchet rotating. This structure is simple and compact. If this structure is applied to a reclosing mechanism, it can automatically switch between manual and electric operation, avoiding the rotation of the drive source (such as a motor) during manual operation, thereby significantly reducing operating resistance, improving the user experience, and effectively preventing damage to the drive source caused by reverse drive. In traditional self-disengaging structures, the ratchet and the actuator often use a pawl or pin structure. These connection methods are prone to wear and gaps after long-term reciprocating motion, leading to jamming or shaking during operation, affecting the mechanism's action accuracy and service life. This application innovatively employs a spherical ball structure at key connection points. The ball can rotate freely 360° within the rotating groove, while the ratchet guides and limits the ball's movement trajectory. When the ratchet drives the ball, rolling friction is generated between the ball, the ratchet, and the rotating components. Compared to traditional sliding friction, this reduces the coefficient of friction, effectively decreasing motion resistance and component wear. Furthermore, the ball's multi-directional rotational characteristics can adaptively compensate for minor coaxiality errors generated during assembly, lowering the requirements for machining and assembly precision and improving the overall assembly efficiency and operational reliability of the mechanism.

[0007] Optionally, the length of the pushing surface is greater than the diameter of the sphere.

[0008] By adopting the above technical solution, the length of the pushing surface is set to be greater than the diameter of the ball, ensuring that the pushing surface can fully contact and push the ball to move when the ratchet rotates in the forward direction, avoiding the ball from getting stuck or unable to detach, and improving the motion reliability and response sensitivity of the self-detaching structure.

[0009] Optionally, the number of spheres corresponds to the number of ratchet teeth.

[0010] By adopting the above technical solution, the number of balls corresponds to the number of ratchet teeth, so that each ratchet tooth corresponds to one ball, ensuring the uniformity of force during locking and unlocking, avoiding the problem of excessive local force or free spinning of the balls, and improving the stability and service life of the structure.

[0011] A reclosing mechanism includes a self-disengaging structure, an operating lever, a first gear, a second gear, a drive source, and a transmission assembly. The operating lever is anti-rotatingly connected to the first gear, the first gear is meshing with the second gear, the drive source is used to drive a ratchet to rotate, the second gear is fixedly connected to a rotating component, and the second gear is used to drive a circuit breaker handle to rotate via the transmission assembly.

[0012] By adopting the above technical solution, the self-disengaging structure is integrated into the reclosing mechanism, and combined with the operating lever, first gear, second gear, drive source, and transmission components, it achieves compatibility with both manual and electric operation modes. When the drive source drives the ratchet to rotate, the self-disengaging structure is in a locked state, and power can be transmitted to the handle; during manual operation, the self-disengaging structure automatically disengages, preventing the drive source from being driven in the opposite direction, making operation less strenuous and the structure safer and more reliable.

[0013] Optionally, the number of teeth of the first gear is less than the number of teeth of the second gear.

[0014] By adopting the above technical solution, the number of teeth of the first gear is set to be less than the number of teeth of the second gear, forming a transmission structure that reduces speed and increases torque. During manual operation, the difference in gear ratio also helps to reduce the operating force and further improve the ease of manual operation.

[0015] Optionally, the transmission assembly includes a first connecting rod, a second connecting rod, a fixed plate, and a slider. The first connecting rod includes a connecting end and a transmission end. The connecting end is eccentrically rotatably connected to a second gear. The transmission end is rotatably connected to the second connecting rod. The fixed plate and the slider are both located on one side of the second gear. The slider can slide in a direction close to or away from the second gear. The slider is used to drive the circuit breaker handle to rotate. The fixed plate has an inclined groove that extends in a direction that is further away from the second gear and further away from the slider. The second connecting rod includes a sliding end and a rotating end. The sliding end slides along the inclined groove. The rotating end is rotatably connected to the slider. The transmission end is located between the sliding end and the rotating end.

[0016] By adopting the above technical solution, the rotation of the second gear is converted into the oscillation of the first link by the eccentric connection between the first link and the second gear. Then, through the sliding constraint of the second link within the inclined groove of the fixed plate, the oscillation is ultimately converted into the linear motion of the slider in a specific direction. This combination of a double link and an inclined groove structure achieves a larger slider stroke with a smaller second gear rotation radius, thus effectively driving the circuit breaker to close. By setting the inclined groove, compared to opening a strip groove on the slider or the second link, the length of the second link can be reduced while achieving the same slider sliding stroke, thus saving effort. Compared to traditional mechanisms using large-sized cranks, this solution significantly reduces the movement space required for the drive components, making the layout of the entire reclosing mechanism more compact, which is beneficial for reducing the overall size of the circuit breaker and meeting the requirements of miniaturization design.

[0017] Optionally, the fixing plate is also provided with a straight groove communicating with the inclined groove. The straight groove extends along the sliding direction of the slider and is located on the side of the inclined groove away from the second gear.

[0018] By adopting the above technical solution, a straight groove communicating with the inclined groove is opened on the fixed plate, providing a more complete motion path for the sliding end of the second connecting rod. The straight groove cooperates with the inclined groove. The inclined groove already meets the requirements for the change of track distance. The setting of the straight groove is not used to increase the stroke of the slider, but to save effort: when the four-bar linkage inside the handle reaches the dead point of high effort, the sliding end of the second connecting rod is located in the straight groove, reducing the torque and achieving the effect of saving effort.

[0019] Optionally, the included angle between the inclined groove and the straight groove is 120°.

[0020] By adopting the above technical solution, the included angle between the inclined slot and the straight slot is specifically set to 120°, which is an optimized angle design. This angle ensures that the first and second connecting rods are subjected to the most reasonable force during transmission, resulting in a smooth and seamless motion transition and avoiding motion interference or jamming caused by improper angle design. At the same time, this angle can save effort while ensuring a sufficient stroke amplification ratio, and it also balances the overall structure in terms of length and width, further optimizing the space utilization efficiency inside the reclosing mechanism.

[0021] Optionally, it also includes a mounting plate, a pressure plate is fixedly connected to the operating lever, the first gear is located between the pressure plate and the mounting plate, and an elastic element is provided between the pressure plate and the mounting plate to press the first gear onto the mounting plate.

[0022] By adopting the above technical solution, a pressure plate is set on the operating lever, and together with the mounting plate and elastic element, the elastic force of the elastic element presses the first gear firmly against the mounting plate. This axial elastic clamping structure can automatically eliminate the axial clearance that may occur when the first gear and the second gear mesh, ensuring that the gears are always tightly meshed, thereby reducing transmission noise and vibration, and improving the smoothness and reliability of the transmission. At the same time, this structure can also compensate for changes in axial clearance caused by manufacturing tolerances of parts or wear over long-term use, and has an adaptive adjustment function, extending the service life of the mechanism.

[0023] A circuit breaker includes a housing and a reclosing mechanism disposed within the housing.

[0024] By adopting the above technical solution, the reclosing mechanism is integrated into the circuit breaker housing, enabling the circuit breaker to have both manual and electric closing functions. Moreover, manual operation does not drive the drive source, making operation labor-saving, compact in structure, and highly reliable, effectively improving the intelligence level of the circuit breaker and the user experience. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the self-detaching structure of this application.

[0026] Figure 2 This is a schematic diagram of the reclosing mechanism of this application.

[0027] Figure 3 This is a structural schematic diagram of the reclosing mechanism that highlights the ratchet in this application.

[0028] Figure 4 This is a schematic diagram of the operating lever in the reclosing mechanism of this application.

[0029] Figure 5 This is a schematic diagram of the circuit breaker in this application.

[0030] Figure 6 This is a schematic diagram of the internal structure of the circuit breaker in this application.

[0031] Explanation of reference numerals in the attached drawings: 1. Rotating component; 11. Rotating groove; 2. Ratchet; 21. Pushing surface; 22. Locking surface; 3. Ball; 4. Operating lever; 5. First gear; 6. Second gear; 7. Drive source; 8. Transmission assembly; 81. First connecting rod; 811. Connecting end; 812. Transmission end; 82. Second connecting rod; 821. Sliding end; 822. Rotating end; 83. Fixed plate; 831. Inclined groove; 832. Straight groove; 84. Slider; 9. Mounting plate; 100. Pressure plate; 110. Elastic component; 120. Housing; 121. Wiring terminal; 130. Sealing plate. Detailed Implementation

[0032] The following combination Figures 1-6 This application will be described in further detail.

[0033] This application discloses a self-detaching structure. (Refer to...) Figure 1 The self-disengaging structure includes a rotating component 1, a ratchet 2, and multiple balls 3. The rotating component 1 and the ratchet 2 can rotate independently and coaxially. The rotating component 1 has a rotating groove 11 for mounting the ratchet 2. Adjacent ratchet teeth of the ratchet 2 form accommodating spaces for different balls 3. This arrangement allows the rotating component 1 and the ratchet 2 to exhibit different engagement relationships under different rotational states, achieving the effect of locking and disengaging between the rotating component 1 and the ratchet 2. When the ratchet 2 rotates in the reverse direction, the locking surface 22 presses the balls 3 against the groove wall of the rotating groove 11, thereby locking the rotating component 1 and the ratchet 2. The ratchet 2 can drive the rotating component 1 to rotate synchronously. When the ratchet 2 rotates in the forward direction, the pushing surface 21 pushes the balls 3 to move, causing the balls 3 to disengage from the pressed state, achieving automatic disengagement between the rotating component 1 and the ratchet 2, with only the ratchet 2 rotating. This is because the compression of the ball 3 by the locking surface 22 and the groove wall of the rotating groove 11 generates sufficient friction between them, ensuring the synchronicity of rotation; while when the pushing surface 21 pushes the ball 3, it breaks this compression state, thereby releasing the lock.

[0034] Reference Figure 1The rotating component 1 is typically a disc-shaped structure with a certain thickness, and can be made of metal, such as steel, which has good strength and wear resistance. The rotating groove 11 on the rotating component 1 is generally a circular groove, and its diameter is slightly larger than the outer diameter of the ratchet 2 to ensure that the ratchet 2 can rotate freely in the groove. The depth of the rotating groove 11 must be sufficient to accommodate the ratchet 2 and the ball 3.

[0035] Reference Figure 1 Ratchet 2 is a key component of the self-disengaging structure. Its shape resembles a gear, but its teeth have a special design. The ratchet teeth of ratchet 2 have two important surfaces: a pushing surface 21 and a locking surface 22. The length of the pushing surface 21 is greater than the diameter of the ball 3. This ensures that when ratchet 2 rotates in the forward direction, the pushing surface 21 can fully contact and push the ball 3 to move, preventing the ball 3 from getting stuck or unable to disengage, thus improving the reliability and responsiveness of the self-disengaging structure. The locking surface 22 is an arc surface. Ratchet 2 can also be made of metal, such as stainless steel, to ensure its strength and durability. The number of ratchet teeth in ratchet 2 can be designed according to actual needs; different numbers of ratchet teeth will affect the working characteristics of the self-disengaging structure. For example, a larger number of ratchet teeth may result in higher locking and disengagement accuracy, but the manufacturing difficulty will also increase accordingly.

[0036] Reference Figure 1 The ball 3 is a crucial component for achieving the self-disengagement function. Its number corresponds to the number of ratchet teeth in the ratchet 2, ensuring uniform force distribution during locking and disengagement, preventing excessive localized force or free-spinning of the ball 3, and improving structural stability and service life. The ball 3 is typically made of steel, which has good hardness and rolling performance. The smooth surface of the steel ball reduces frictional resistance during rotation. Besides steel balls, ceramic balls can also be used, offering higher hardness and wear resistance, but at a relatively higher cost. The diameter of the ball 3 must be appropriately selected based on the dimensions of the rotating groove 11 and the ratchet 2 to ensure free rolling and clamping within the designated space.

[0037] Reference Figure 1 The self-detaching structure also includes a sealing plate 130, which is used to close the rotating groove 11 to prevent the ball 3 from falling out. The sealing plate 130 is fixedly connected to the rotating component 1 by bolts or other structures.

[0038] The implementation principle of the self-disengaging structure in this application embodiment is as follows: through the ingenious cooperation of the rotating component 1, ratchet 2, and ball 3, the locking and disengaging functions between the rotating component 1 and the ratchet 2 are realized. In application scenarios involving manual and electric operation, the working state can be automatically switched, avoiding the rotation of the drive source 7 during manual operation, greatly reducing operating resistance, improving the user experience, and effectively preventing damage to the drive source 7 caused by reverse drive. Compared with the traditional self-disengaging structure, the spherical component structure allows the ball 3 to rotate freely 360° within the rotating groove 11, forming rolling friction, reducing the coefficient of friction, reducing motion resistance and component wear, and can also adaptively compensate for minor coaxiality errors during the assembly process, improving the overall assembly efficiency and operational reliability of the mechanism.

[0039] This application also discloses a reclosing mechanism, as described in the embodiments below. Figure 2 and Figure 3 The reclosing mechanism includes the aforementioned self-disengaging structure, as well as an operating lever 4, a first gear 5, a second gear 6, a drive source 7, and a transmission assembly 8. The operating lever 4 is anti-rotatingly connected to the first gear 5, and the first gear 5 is meshed with the second gear 6. The drive source 7 drives the ratchet 2 to rotate. The second gear 6 is fixedly connected to the rotating component 1 and drives the circuit breaker handle to rotate via the transmission assembly 8. This structure achieves compatibility with both manual and electric operation modes, resulting in effortless operation and a safe and reliable structure. When the drive source 7 drives the ratchet 2 to rotate, the self-disengaging structure is locked, and power can be transmitted to the handle; during manual operation, the self-disengaging structure automatically disengages, preventing the drive source 7 from being driven in the opposite direction.

[0040] Reference Figure 2 The operating lever 4 is a manually operated component, typically a rod-shaped structure, and can be made of plastic or metal. One end of the operating lever 4 is connected to the first gear 5 to prevent rotation, which can be achieved through a keyed connection or spline connection, ensuring that the rotation of the operating lever 4 drives the first gear 5 to rotate synchronously. The other end of the operating lever 4 has an internal hexagonal groove, making it convenient for the operator to use tools to rotate the operating lever 4.

[0041] Reference Figure 2 The first gear 5 and the second gear 6 are key components of the transmission. The first gear 5 has fewer teeth than the second gear 6, forming a transmission structure that reduces speed and increases torque. During manual operation, the difference in gear ratio helps reduce operating force, further improving the ease of manual operation. The first gear 5 and the second gear 6 are generally made of metal, such as carbon steel, which has high strength and wear resistance. Their tooth profiles are precisely designed to ensure smooth meshing and transmission efficiency. The second gear 6 is fixedly connected to the rotating part 1, which can be achieved through welding or bolting.

[0042] Reference Figure 2 and Figure 4 The reclosing mechanism also includes a mounting plate 9. A pressure plate 100 is fixedly connected to the operating lever 4 by means of interference fit or other methods. The first gear 5 is located between the pressure plate 100 and the mounting plate 9. An elastic element 110 is connected between the pressure plate 100 and the mounting plate 9 to press the first gear 5 against the mounting plate 9. In this embodiment, the elastic element 110 is a spring. Two washers are slidably sleeved on the operating lever 4. The two washers are located on the side of the mounting plate 9 away from the first gear 5, and the spring is also sleeved on the operating lever 4. A pin is horizontally fixed on the operating lever 4. The spring force presses one washer against the mounting plate 9 and the other washer against the pin, continuously applying a downward force to the operating lever 4, so that the pressure plate 100 presses the first gear 5 against the mounting plate 9. This axial elastic pressing structure can automatically eliminate the axial clearance that may be generated when the first gear 5 and the second gear mesh, ensuring that the gears are always tightly meshed, thereby reducing transmission noise and vibration, and improving the smoothness and reliability of the transmission. At the same time, the structure can also compensate for changes in axial clearance caused by manufacturing tolerances of parts or wear and tear over long-term use, and has an adaptive adjustment function, thus extending the service life of the mechanism.

[0043] Reference Figure 2 The drive source 7 can be a motor or other power device used to drive the ratchet 2 to rotate. The output shaft of the drive source 7 is connected to the shaft hole of the ratchet 2 via a key and keyway or bolts to prevent rotation, thus driving the ratchet 2 to rotate. The power and speed of the drive source 7 should be selected according to actual needs to meet different working requirements.

[0044] Reference Figure 2 The transmission assembly 8 includes a first connecting rod 81, a second connecting rod 82, a fixed plate 83, and a slider 84. The first connecting rod 81 includes a connecting end 811 and a transmission end 812. The connecting end 811 is eccentrically rotatably connected to the second gear 6, and the transmission end 812 is rotatably connected to the second connecting rod 82. The fixed plate 83 and the slider 84 are both located on one side of the second gear 6. The slider 84 can slide in a direction close to or away from the second gear 6 and is used to drive the circuit breaker handle to rotate. The fixed plate 83 has a sloping groove 831, which extends in a direction that is further away from the second gear 6 and further away from the slider 84. The second connecting rod 82 includes a sliding end 821 and a rotating end 822. The sliding end 821 slides along the sloping groove 831, and the rotating end 822 is rotatably connected to the slider 84. The transmission end 812 is located between the sliding end 821 and the rotating end 822. This structural combination converts the rotation of the second gear 6 into the linear motion of the slider 84, achieving a larger stroke of the slider 84 with a smaller rotation radius of the second gear 6, thereby effectively driving the circuit breaker to close. At the same time, it reduces the movement space required by the drive components, making the layout of the entire reclosing mechanism more compact.

[0045] Reference Figure 2The first connecting rod 81 can be made of metal, such as steel or aluminum alloy, to ensure its strength and rigidity. Alternatively, it can be made of engineering plastics to reduce weight. The connecting end 811 of the first connecting rod 81 is eccentrically rotatably connected to the second gear 6 via a pin or other connecting component. When the second gear 6 rotates, the connecting end 811 moves in a circular motion with the second gear 6, thereby causing the first connecting rod 81 to swing. The transmission end 812 is rotatably connected to the second connecting rod 82 via a pin or other connecting component, transmitting the swing of the first connecting rod 81 to the second connecting rod 82.

[0046] Reference Figure 2 The second connecting rod 82 can also be made of metal or engineering plastic. A pivot or other rotating structure is fixedly mounted on the sliding end 821 of the second connecting rod 82, allowing it to slide and rotate within the inclined groove 831. A roller can also be provided on the sliding end 821 of the second connecting rod 82, rolling along the inclined groove 831 on the fixed plate 83 to reduce friction during sliding. The rotating end 822 is rotatably connected to the slider 84 via a pivot or other connecting component.

[0047] Reference Figure 2 The fixing plate 83 can be made of materials such as metal or plastic plates, and manufactured through processes such as casting and machining. The fixing plate 83 can also be replaced by other support structures, as long as they can form the inclined groove 831 and provide support. The shape of the inclined groove 831 can be straight or curved, but in general, it extends in the direction that is further away from the second gear 6 and further away from the slider 84.

[0048] Reference Figure 2 The fixed plate 83 also has a straight groove 832 communicating with the inclined groove 831. The straight groove 832 extends along the sliding direction of the slider 84 and is located on the side of the inclined groove 831 away from the second gear 6. The setting of the straight groove 832 provides a more complete motion path for the sliding end 821 of the second link 82. When the four-bar linkage inside the handle reaches the dead point of high effort, the sliding end 821 of the second link 82 is located in the straight groove 832, reducing torque and achieving the effect of saving effort.

[0049] Reference Figure 2 The included angle between the straight groove 832 and the inclined groove 831 is 120°. Setting the included angle between the inclined groove 831 and the straight groove 832 to 120° is an optimized angle design that ensures the most reasonable force distribution on the first connecting rod 81 and the second connecting rod 82 during transmission, resulting in smooth and seamless motion transitions and avoiding motion interference or jamming caused by improper angle design. Simultaneously, this angle, while ensuring a sufficient stroke amplification ratio, also saves effort and balances the overall structure's dimensions in both length and width directions, further optimizing the internal space utilization efficiency of the reclosing mechanism.

[0050] Reference Figure 2The reclosing mechanism also includes guide rods that extend along the sliding direction of the slider 84. Two guide rods are provided and arranged in parallel. The slider 84 has guide holes through which the guide rods pass. The guide rods provide precise guidance and constraint for the linear reciprocating motion of the slider 84. The guide rods can be made of metal with a smooth surface to reduce friction with the guide holes of the slider 84.

[0051] Reference Figure 2 The slider 84 also has a slot for inserting the circuit breaker handle, the shape of which is adapted to the end shape of the circuit breaker handle. The slider 84 can be made of materials such as metal or plastic, and can be manufactured through processes such as machining or injection molding.

[0052] This application also discloses a circuit breaker. (See attached embodiments.) Figure 5 and Figure 6 The circuit breaker includes a housing 120 and the aforementioned reclosing mechanism. The housing 120 can be made of plastic or metal and manufactured through processes such as injection molding or machining, possessing certain strength and protective performance. The housing 120 includes multiple terminals 121 for connecting external lines. The terminals 121 are used to connect external wires and cables, realizing the connection between the circuit breaker and the external circuit.

[0053] Reference Figure 6 The drive source 7, the fixing plate 83, the guide rod and the mounting plate 9 are all fixedly installed in the housing 120 by means of bolt connection, etc., and the operating rod 4 is rotatably installed in the housing 120.

[0054] Reference Figure 6 The slider 84 and the fixing plate 83 are arranged along the arrangement direction of each terminal 121, and the slider 84 slides in a direction perpendicular to the arrangement direction of each terminal 121. This arrangement of the slider 84 and the fixing plate 83 fully considers the shape of the internal space of the circuit breaker housing 120 and the position of the terminals 121, so that the movement direction of the slender slider 84 is perpendicular to the arrangement direction of the terminals 121. This maximizes the use of the width and length of the housing 120, realizes the rational planning and efficient use of the internal space, and helps the circuit breaker to develop in a shorter and narrower direction, meeting the needs of circuit breaker miniaturization design. The first gear 5 and the second gear 6 are arranged along the arrangement direction of each terminal 121.

[0055] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A self-detaching structure, characterized in that: The device includes a rotating component, a ratchet, and multiple balls. The rotating component and the ratchet can rotate independently and coaxially. The rotating component has a rotating groove for mounting the ratchet. The adjacent ratchet teeth of the ratchet form a receiving space for accommodating different balls. The two sides of the ratchet teeth are a pushing surface and a locking surface, respectively. The ratchet can rotate until the pushing surface abuts against the pushing ball. The ratchet can also rotate in the opposite direction until the locking surface presses the ball tightly against the groove wall of the rotating groove.

2. The self-detaching structure according to claim 1, characterized in that: The length of the pushing surface is greater than the diameter of the sphere.

3. The self-detaching structure according to claim 1, characterized in that: The number of spheres corresponds to the number of ratchet teeth.

4. A reclosing mechanism, characterized in that: The device includes the self-disengaging structure as described in claim 1, and further includes an operating lever, a first gear, a second gear, a drive source, and a transmission assembly. The operating lever is anti-rotatingly connected to the first gear, the first gear is meshing with the second gear, the drive source is used to drive the ratchet to rotate, the second gear is fixedly connected to the rotating component, and the second gear is used to drive the circuit breaker handle to rotate through the transmission assembly.

5. A reclosing mechanism according to claim 4, characterized in that: The number of teeth on the first gear is less than the number of teeth on the second gear.

6. A reclosing mechanism according to claim 4, characterized in that: The transmission assembly includes a first connecting rod, a second connecting rod, a fixed plate, and a slider. The first connecting rod includes a connecting end and a transmission end. The connecting end is eccentrically rotatably connected to a second gear. The transmission end is rotatably connected to the second connecting rod. The fixed plate and the slider are both located on one side of the second gear. The slider can slide in a direction close to or away from the second gear. The slider is used to drive the circuit breaker handle to rotate. The fixed plate has an inclined groove that extends in a direction that is further away from the second gear and further away from the slider. The second connecting rod includes a sliding end and a rotating end. The sliding end slides along the inclined groove. The rotating end is rotatably connected to the slider. The transmission end is located between the sliding end and the rotating end.

7. A reclosing mechanism according to claim 6, characterized in that: The fixed plate is also provided with a straight groove that communicates with the inclined groove. The straight groove extends along the sliding direction of the slider and is located on the side of the inclined groove away from the second gear.

8. A reclosing mechanism according to claim 7, characterized in that: The angle between the inclined groove and the straight groove is 120°.

9. A reclosing mechanism according to claim 4, characterized in that: It also includes a mounting plate, a pressure plate is fixedly connected to the operating lever, the first gear is located between the pressure plate and the mounting plate, and an elastic element is provided between the pressure plate and the mounting plate to press the first gear onto the mounting plate.

10. A circuit breaker, characterized in that: It includes a housing and the reclosing mechanism as described in claim 4, wherein the reclosing mechanism is disposed within the housing.

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