Tripping assembly and circuit breaker

Abstract

The utility model discloses a tripping assembly and a circuit breaker, and relates to the technical field of low-voltage electrical appliances, the tripping assembly is matched with a tripping mechanism, the tripping mechanism comprises a lock catch and a jump pin, the lock catch can be relatively locked with the jump pin, and the lock catch is rotatably connected to a first preset position. The tripping assembly comprises an armature rotationally connected to a second preset position, the armature extends towards the position of the lock catch and forms a clapping part, and the lock catch is provided with a bearing part matched with the clapping part. When the lock catch and the jump pin are relatively locked, the beating part and the bearing part are arranged at an interval, or the beating part abuts against the bearing part. When the tripping assembly triggers tripping, the armature rotates and drives the beating part to move towards the bearing part, and the beating part pushes the bearing part until the lock catch and the jump pin are relatively unlocked. According to the tripping assembly and the circuit breaker provided by the invention, the tripping assembly can be stably matched with the tripping mechanism in the circuit breaker, and the use stability of the circuit breaker is improved.

Description

Technical Field

[0001] This application relates to the technical field of low-voltage electrical appliances, and particularly to a tripping component and a circuit breaker. Background Art

[0002] Switching devices such as circuit breakers are key equipment to ensure the stable operation of the power system. In the face of abnormal conditions such as overload and short circuit, the circuit breaker can quickly and accurately cut off the faulty circuit, thus avoiding electrical accidents.

[0003] In the prior art, the tripping component in the circuit breaker includes a push rod and a coil sleeved on the push rod and other structures. The coil is energized to generate a magnetic field to drive the push rod to push the locking latch and the tripping latch to unlock, so as to realize the protection function of the circuit breaker.

[0004] However, using the linear motion of the push rod to push the locking latch to rotate so that the locking latch and the tripping latch are unlocked, this cooperation form is prone to situations where the push rod cannot reach the locking latch or the push rod and the locking latch are jammed. The cooperation between the push rod and the locking latch is unstable, resulting in untimely unlocking of the locking latch and affecting the normal use of the circuit breaker. Utility Model Content

[0005] The purpose of this application is to provide a tripping component and a circuit breaker, which can stably cooperate the tripping component with the tripping mechanism in the circuit breaker and improve the use stability of the circuit breaker.

[0006] In a first aspect, an embodiment of this application provides a tripping component, which is cooperatively arranged with a tripping mechanism. The tripping mechanism includes a locking latch and a tripping latch. The locking latch can be relatively locked with the tripping latch, and the locking latch is rotatably connected to a first preset position. The tripping component includes an armature rotatably connected to a second preset position. The armature extends towards the position of the locking latch and forms a latching portion. A receiving portion adapted to the latching portion is provided on the locking latch.

[0007] When the locking latch and the tripping latch are relatively locked, the latching portion and the receiving portion are arranged at an interval, or the latching portion abuts against the receiving portion. When the tripping component triggers tripping, the armature rotates and drives the latching portion to move towards the receiving portion. The latching portion pushes the receiving portion until the locking latch and the tripping latch are relatively unlocked.

[0008] Based on the above embodiment of this application, compared with the traditional tripping device that uses the linear motion of the push rod to push the locking latch to rotate and unlock, it is easy to occur that the push rod presses the locking latch tightly, resulting in the locking latch being unable to rotate. In this embodiment, the armature in the tripping component is rotatably connected to the second preset position, so that the armature can reversely push the locking latch to rotate and unlock from the rotation path of the locking latch during the rotation process, effectively improving the stability of the cooperation between the tripping component and the locking latch, preventing the armature and the locking latch from being stuck or not contacting properly, and ensuring that the locking latch can be driven by the tripping component to unlock in time, so as to improve the timeliness of controlling the on-off of the circuit.

[0009] At the same time, the armature cooperates with the receiving part on the lock buckle through the snapping part. This cooperation form has a simple structure, stable and reliable action, and high practicality.

[0010] In an optional embodiment, a snapping surface is provided on the snapping portion, and a receiving surface is provided on the receiving portion. The snapping surface is a plane, and the receiving surface is an arc surface. The receiving surface can be tangent to the snapping surface.

[0011] Based on the above-mentioned embodiments of the present application, by setting the snapping surface as a plane and setting the receiving surface as an arc surface, when the snapping part contacts the receiving part, the snapping surface and the receiving surface always maintain a tangent state. In this way, in the process of the snapping part abutting and pushing the receiving part, the snapping surface can not only stably contact and apply force to the receiving surface, but also make the contact point between the snapping surface and the receiving surface constantly change, thereby preventing the snapping part and the receiving part from getting stuck, and ensuring that the lock can be unlocked smoothly.

[0012] In an optional embodiment, the armature includes a main body portion and a snap-fit portion, the main body portion is rotatably connected to the second preset position, and the snap-fit portion is arranged at an end of the main body portion away from the second preset position.

[0013] Based on the above-mentioned embodiments of the present application, the main body is used to realize the rotational connection of the armature, and the snap-fitting part is used to realize the cooperation with the receiving part. The armature composed of the main body and the snap-fitting part has the characteristics of simple structure and easy manufacturing and assembly.

[0014] In an optional embodiment, the flapping portion includes a first folding plate and a second folding plate, the first folding plate is connected to the main body and is arranged at an angle. The second folding plate is connected to an end of the first folding plate away from the main body, the second folding plate is arranged at an angle to the first folding plate, and the flapping surface is arranged on the second folding plate.

[0015] Based on the above-mentioned embodiments of the present application, the arrangement of the first folding plate and the second folding plate can enable the flapping part to correspond to the position of the receiving part on the lock when extending from the main body toward the direction of the lock, thereby reducing the idle stroke of the flapping part before it pushes the receiving part, so that the flapping part can act on the receiving part more accurately, so that the receiving part can drive the lock to move accurately to the unlocking position.

[0016] In an optional embodiment, the angle between the first folding plate and the main body is an obtuse angle, and the angle between the second folding plate and the first folding plate is an obtuse angle.

[0017] Based on the above-mentioned embodiments of the present application, the angle between the first folding plate and the main body is set to an obtuse angle, which is used to extend the first folding plate away from the main body on the one hand, and on the other hand, it can change the extension direction of the flapping part so that the second folding plate is located close to the receiving part.

[0018] The angle between the second folding plate and the first folding plate is set to an obtuse angle, which is also used to make the flapping part extend away from the main body and change the extension direction of the second folding plate so that the second folding plate can accurately contact the receiving part. This arrangement effectively shortens the matching gap between the flapping part and the receiving part, so that the flapping part pushes the receiving part more timely.

[0019] In an optional embodiment, the intersection position between the first folding plate and the main body is an arc transition, and the intersection position between the second folding plate and the first folding plate is an arc transition.

[0020] Based on the above-mentioned embodiments of the present application, a circular arc transition connection is adopted between the first folding plate and the main body, and a circular arc transition connection is also adopted between the second folding plate and the first folding plate. Such an arrangement can make the structure of the flapping part smooth, prevent collision with the tripping mechanism from affecting the structural stability of the tripping assembly and the tripping mechanism, and can make the relative movement between the flapping part and the receiving part smoother, so that the armature can smoothly push the lock to rotate.

[0021] In an optional embodiment, the trip assembly further includes a bracket and a yoke, the bracket is mounted on the housing, the yoke is mounted on the bracket, and the second preset position is set on the bracket. The armature is rotatably connected to the bracket, and the armature is at least partially spaced apart from the yoke.

[0022] Based on the above-mentioned embodiments of the present application, the armature is rotatably set on the bracket and the magnetic attraction of the yoke is used to rotate the armature around the second preset position, thereby driving the tripping mechanism to unlock. This form of cooperation is simple and efficient, and can accurately and timely realize automatic control of the tripping of the tripping mechanism according to the current conditions, thereby effectively improving the cooperation stability and accuracy between the tripping assembly and the tripping mechanism.

[0023] In an optional embodiment, the lock comprises a connecting portion, a locking portion and an unlocking portion, the connecting portion is rotatably connected to the first preset position, the locking portion deviates from the first preset position and extends in the direction of the buckle tripping, and a locking groove is provided on the locking portion. The unlocking portion deviates from the first preset position and partially extends in the direction of the armature, and a receiving portion is provided on the unlocking portion.

[0024] Based on the above-mentioned embodiments of the present application, the lock structure composed of the connecting part, the locking part and the unlocking part is stable, the connecting part is used to rotate and connect to the first preset position, the locking part is used to lock with the jump buckle, and the unlocking part is used to cooperate with the armature to unlock the locking part. In addition, the locking part and the unlocking part are located on different sides of the connecting part, which is conducive to the locking and unlocking of the connecting part during the rotation process, and avoids the locking process and the unlocking process from affecting each other.

[0025] In an alternative embodiment, the tripping assembly is installed in the housing. The first preset position and the second preset position are spaced apart. The height of the first preset position is higher than that of the second preset position relative to the bottom of the housing. The setting direction of the tripping assembly is from the first preset position towards the second preset position.

[0026] Based on the above embodiments of the present application, relative to the bottom of the housing, the first preset position and the second preset position are spaced apart in height, which means that the tripping assembly and the tripping mechanism are installed at different heights in the housing. Among them, the height of the first preset position is higher than that of the second preset position relative to the bottom of the housing, so that the tripping assembly can be inclined, that is, the tripping assembly extends obliquely from the second preset position to the first preset position. In the obliquely arranged tripping assembly, the lengths of the bracket, the yoke, and the conductive member cooperating with the yoke are all increased. The increase in the cooperating length of the conductive member and the yoke is beneficial to improving the magnetic attraction of the yoke to the armature, and can more stably adsorb the armature when the circuit is abnormal.

[0027] In a second aspect, an embodiment of the present application further provides a circuit breaker, including a housing, a tripping mechanism, and the above-mentioned tripping assembly. The tripping assembly and the tripping mechanism are arranged in the housing.

[0028] Based on the above embodiments of the present application, applying the above-mentioned tripping assembly in the circuit breaker can cooperate with the tripping mechanism more stably, improve the reliability of the tripping assembly to drive the tripping mechanism to trip, ensure that the tripping mechanism can trip in time when the circuit where the circuit breaker is located is abnormal, so as to disconnect the circuit of the circuit breaker and improve the use stability and safety of the circuit breaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0030] Figure 1 It is a schematic diagram of the cooperation structure of the tripping assembly and the tripping mechanism of the circuit breaker provided by the embodiment of the present application in the connected state.

[0031] Figure 2 It is a schematic diagram of the structure when the tripping assembly of the embodiment of the present application operates.

[0032] Figure 3 It is a schematic diagram of the structure of the tripping assembly provided by the embodiment of the present application.

[0033] Figure 4 It is a schematic diagram of the structure of the armature provided by the embodiment of the present application.

[0034] Figure 5 A schematic diagram of the structure of the lock provided in an embodiment of the present application.

[0035] Figure 6 A schematic diagram of the structure in which the trip assembly and the trip mechanism provided in the embodiment of the present application are installed in a circuit breaker.

[0036] Description of reference numerals:

[0037] 1. Tripping assembly; 11. Second preset position; 12. Armature; 121. Clapping part; 1211. Clapping surface; 1212. First folding plate; 1213. Second folding plate; 122. Main body; 13. Bracket; 14. Yoke; 15. Conductive member; 2. Tripping mechanism; 21. Locking catch; 211. Receiving part; 2111. Receiving surface; 212. Connecting part; 213. Locking part; 2131. Locking groove; 214. Unlocking part; 22. Jumping catch; 23. First preset position; 3. Shell. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0039] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0040] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0041] In the description of this application, it should be noted that the terms "inside", "outside", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the application is usually placed when in use, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0042] In the description of the present application, it should also be noted that unless otherwise clearly specified and defined, the terms "arrangement" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0043] The miniature circuit breaker includes a tripping component, a tripping mechanism, contacts, an arc extinguishing component and other structures. Among them, the tripping component is used to realize the protection function of the circuit breaker. The tripping component can drive the tripping mechanism to trip when an abnormality occurs in the circuit, so that the circuit breaker is disconnected.

[0044] The existing tripping component adopts the form of cooperation between a push rod and a coil. The coil is sleeved on the push rod. When current passes through the coil, a magnetic field is generated. When the current reaches a preset value, the generated magnetic field drives the push rod to eject linearly to push the latch and the trip latch in the tripping mechanism to unlock.

[0045] However, since the latch is usually rotatably arranged in the circuit breaker and rotatably cooperates with the trip latch, when the push rod ejects linearly and acts on the latch, it is easy to occur that the latch is pressed by the push rod, or the push rod cannot reach the latch. The above situations will lead to unstable cooperation between the tripping component and the tripping mechanism, affecting the normal use of the circuit breaker.

[0046] Based on this, the embodiments of the present application provide a tripping component and a circuit breaker, which can stably cooperate the tripping component with the tripping mechanism in the circuit breaker and improve the use stability of the circuit breaker.

[0047] In order to enable those skilled in the art to better understand the solution of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings.

[0048] Please refer to Figures 1 to 3 , this embodiment provides a tripping component 1, which is cooperatively arranged with a tripping mechanism 2. The tripping mechanism 2 includes a latch 21 and a trip latch 22. The latch 21 can be relatively locked with the trip latch 22, and the latch 21 is rotatably connected to a first preset position 23.

[0049] The tripping component 1 includes an armature 12 rotatably connected to a second preset position 11. The armature 12 extends towards the position of the latch 21 and forms a latching portion 121. A receiving portion 211 adapted to the latching portion 121 is provided on the latch 21.

[0050] When the latch 21 is relatively locked with the trip latch 22, the latching portion 121 and the receiving portion 211 are arranged at intervals, or the latching portion 121 abuts against the receiving portion 211.

[0051] When the release component 1 triggers the release, the armature 12 rotates and drives the latching part 121 to move towards the receiving part 211. The latching part 121 pushes the receiving part 211 until the lock 21 and the trip latch 22 are unlocked relative to each other.

[0052] Refer to Figure 1 , after the circuit breaker is closed, the lock 21 and the trip latch 22 in the release mechanism 2 can maintain a mutually locked state. The release component 1 can operate when an abnormality occurs in the circuit and act on the release mechanism 2 to unlock the lock 21 and the trip latch 22, thereby tripping the circuit breaker.

[0053] Among them, the lock 21 is rotatably connected to the first preset position 23. The lock 21 can rotate around the first preset position 23 and lock and unlock with the trip latch 22. Refer to Figure 3 , the armature 12 in the release component 1 is rotatably connected to the second preset position 11. The second preset position 11 is located on the left side of the first preset position 23. The armature 12 can rotate clockwise around the second preset position 11 and push the lock 21 to rotate counterclockwise around the first preset position 23. During the counterclockwise rotation of the lock 21, it can act on the trip latch 22 to unlock the lock 21 and the trip latch 22.

[0054] Refer to Figure 2 , the first preset position 23 is the installation position of the lock 21 in the circuit breaker and also serves as the rotation center of the lock 21. Refer to Figure 3 , the second preset position 11 is the installation position of the armature 12 on the release component 1 and also serves as the rotation center of the armature 12. The first preset position 23 and the second preset position 11 are fixed and spaced apart. The distance between the first preset position 23 and the second preset position 11 is less than the sum of the rotation radii of the armature 12 and the lock 21.

[0055] Moreover, in this cooperation form, the distance that the armature 12 abuts against the lock 21 and pushes the lock 21 to rotate is greater than the distance that the lock 21 acts on the trip latch 22 to achieve unlocking, so as to ensure that the armature 12 can completely trip the release mechanism 2 during the rotation process.

[0056] Specifically, refer to Figure 2 , the armature 12 is provided with a latching part 121. The latching part 121 is located at a position where the armature 12 is close to the lock 21. The lock 21 is provided with a receiving part 211. The receiving part 211 is located at the farthest end of the lock 21 relative to the first preset position 23. The path along which the latching part 121 rotates with the armature 12 intersects or is tangent to the path along which the receiving part 211 rotates with the lock 21, and the rotation direction of the latching part 121 is opposite to the rotation direction of the receiving part 211.

[0057] Exemplarily, when the latch 21 rotates clockwise around the first preset position 23, it can be locked with the trip latch 22. At this time, the latch 21 and the receiving portion 211 on the latch 21 remain stationary. When an abnormality occurs in the circuit, the tripping assembly 1 operates, that is, the armature 12 rotates clockwise around the second preset position 11. During the rotation of the armature 12, the latching portion 121 can contact and push the receiving portion 211 to rotate counterclockwise around the first preset position 23, so that the latch 21 is unlocked from the trip latch 22.

[0058] Based on the above embodiments of the present application, compared with the traditional tripping device that uses the linear motion of the ejector rod to push the latch 21 to rotate and unlock, it is easy to occur that the ejector rod presses the latch 21 tightly, resulting in the latch 21 being unable to rotate. In this embodiment, the armature 12 in the tripping assembly 1 is rotatably connected to the second preset position 11, so that the armature 12 can reversely push the latch 21 to rotate and unlock from the rotation path of the latch 21 during the rotation process, effectively improving the stability of the cooperation between the tripping assembly 1 and the latch 21, preventing the armature 12 and the latch 21 from being stuck or not contacting properly, and ensuring that the latch 21 can be driven by the tripping assembly 1 to unlock in time, so as to improve the timeliness of controlling the on / off of the circuit.

[0059] At the same time, the armature 12 cooperates with the receiving portion 211 on the latch 21 through the latching portion 121. This cooperation form has a simple structure, stable and reliable operation, and high practicability.

[0060] Refer to Figure 4 and Figure 5 In some examples, a latching surface 1211 is provided on the latching portion 121, and a receiving surface 2111 is provided on the receiving portion 211. The latching surface 1211 is a plane, and the receiving surface 2111 is an arc surface. The receiving surface 2111 can be tangent to the latching surface 1211.

[0061] Based on the above embodiments of the present application, by setting the latching surface 1211 as a plane and the receiving surface 2111 as an arc surface, when the latching portion 121 contacts the receiving portion 211, the latching surface 1211 and the receiving surface 2111 always remain in a tangent state. In this way, during the process of the latching portion 121 abutting against and pushing the receiving portion 211, the latching surface 1211 can not only stably contact and apply force to the receiving surface 2111, but also make the contact point between the latching surface 1211 and the receiving surface 2111 change continuously, preventing the latching portion 121 from being stuck with the receiving portion 211, and ensuring that the latch 21 can be unlocked smoothly.

[0062] Refer to Figure 4 , the latching surface 1211 is the surface of the latching portion 121 facing the receiving portion 211. Refer to Figure 5, the receiving surface 2111 is the surface of the receiving portion 211 facing the latching portion 121. Setting the receiving surface 2111 as an arc can form a line-surface contact between the latching surface 1211 and the receiving surface 2111. Compared with the form of surface-surface contact, the line-surface contact is conducive to the relative movement between the latching surface 1211 and the receiving surface 2111, so that the latching portion 121 can smoothly push the receiving portion 211 to rotate during the rotation of the armature 12, making the process of pushing the latch 21 to the unlocked state more reliable.

[0063] Referring to Figure 4 , in some examples, the armature 12 includes a main body portion 122 and a latching portion 121. The main body portion 122 is rotatably connected to the second preset position 11, and the latching portion 121 is disposed at the end of the main body portion 122 away from the second preset position 11.

[0064] Based on the above embodiments of the present application, the main body portion 122 is used to realize the rotational connection of the armature 12, and the latching portion 121 is used to cooperate with the receiving portion 211. The armature 12 composed of the main body portion 122 and the latching portion 121 has the characteristics of simple structure, easy manufacturing and assembly.

[0065] In the embodiments of the present application, the main body portion 122 and the latching portion 121 are integrally formed. That is, the main body portion 122 is located at the first end of the armature 12, and the latching portion 121 is located at the second end of the armature 12. The main body portion 122 is rotatably connected to the second preset position 11, and the latching portion 121 can rotate around the second preset position 11 with the main body portion 122. When the release assembly 1 performs the release action, only the main body portion 122 of the armature 12 needs to act to drive the latching portion 121 to apply force to the latch 21, so that the latch 21 is unlocked from the jump latch 22. This effectively simplifies the cooperation process between the release assembly 1 and the release mechanism 2, and at the same time improves the cooperation stability between the two.

[0066] Referring to Figure 4 , in some examples, the latching portion 121 includes a first folding plate 1212 and a second folding plate 1213. The first folding plate 1212 is connected to the main body portion 122 and is disposed at an angle. The second folding plate 1213 is connected to one end of the first folding plate 1212 away from the main body portion 122, and the second folding plate 1213 is disposed at an angle with the first folding plate 1212. The latching surface 1211 is disposed on the second folding plate 1213.

[0067] Based on the above embodiments of the present application, the settings of the first folding plate 1212 and the second folding plate 1213 can enable the latching portion 121 to correspond to the position of the receiving portion 211 on the latch 21 when extending from the main body portion 122 towards the latch 21, reducing the dead stroke of the latching portion 121 before pushing the receiving portion 211, so that the latching portion 121 can act on the receiving portion 211 more accurately, so that the receiving portion 211 drives the latch 21 to move accurately to the unlocking position.

[0068] The first folding plate 1212 is disposed between the main body 122 and the second folding plate 1213. The setting of the first folding plate 1212 can change the position of the second folding plate 1213 relative to the main body 122. The first folding plate 1212 is folded toward the position of the receiving portion 211, so that the setting position of the second folding plate 1213 can be closer to the receiving portion 211.

[0069] The second folding plate 1213 is used to achieve a pushing effect on the receiving part 211. The snapping surface 1211 is arranged on the side of the second folding plate 1213 facing the receiving part 211. The second folding plate 1213 is located close to the receiving part 211 after being extended by the first folding plate 1212. When the armature 12 rotates around the second preset position 11, the second folding plate 1213 pushes the receiving part 211 in time to rotate and unlock the lock 21, thereby effectively improving the timeliness of the tripping assembly 1 acting on the tripping mechanism 2 to trip the tripping mechanism 2, and ensuring that the abnormal circuit can be quickly disconnected.

[0070] Reference Figure 4 In some examples, the angle between the first folding plate 1212 and the main body 122 is an obtuse angle, and the angle between the second folding plate 1213 and the first folding plate 1212 is an obtuse angle.

[0071] Based on the above-mentioned embodiments of the present application, the angle between the first folding plate 1212 and the main body 122 is set to be an obtuse angle. On the one hand, it is used to make the first folding plate 1212 extend in the direction away from the main body 122, and on the other hand, it can change the extension direction of the flapping part 121 so that the second folding plate 1213 is located close to the receiving part 211.

[0072] The obtuse angle between the second folding plate 1213 and the first folding plate 1212 is also used to extend the flapping portion 121 in a direction away from the main body 122, and change the extension direction of the second folding plate 1213, so that the second folding plate 1213 can accurately contact the receiving portion 211. This arrangement effectively shortens the matching gap between the flapping portion 121 and the receiving portion 211, so that the flapping portion 121 pushes the receiving portion 211 more timely.

[0073] Reference Figure 4 In some examples, the intersection position between the first folding plate 1212 and the main body 122 is an arc transition, and the intersection position between the second folding plate 1213 and the first folding plate 1212 is an arc transition.

[0074] Based on the above embodiments of the present application, an arc transition connection is adopted between the first folding plate 1212 and the main body 122, and an arc transition connection is also adopted between the second folding plate 1213 and the first folding plate 1212. Such a setting can make the structure of the latching part 121 smoother, prevent it from bumping against the tripping mechanism 2 and affecting the structural stability of the tripping assembly 1 and the tripping mechanism 2, and can make the relative movement between the latching part 121 and the receiving part 211 smoother, enabling the armature 12 to smoothly push against the lock 21 to rotate.

[0075] Referring to Figure 3 , in some examples, the tripping assembly 1 further includes a bracket 13 and a yoke 14. The bracket 13 is installed on the housing 3, the yoke 14 is installed on the bracket 13, and the second preset position 11 is set on the bracket 13. The armature 12 is rotatably connected to the bracket 13, and at least part of the armature 12 is spaced apart from the yoke 14.

[0076] The bracket 13 is used to install the armature 12 and the yoke 14. The bracket 13 is fixedly installed on the housing 3. The yoke 14 on the bracket 13 is mainly used to provide magnetic force. The armature 12 is rotatably connected to the second preset position 11 on the bracket 13 and is spaced apart from the yoke 14. The magnetic force provided by the yoke 14 can exert an adsorption effect on the armature 12, causing the armature 12 to have a tendency to move towards the yoke 14 around the second preset position 11.

[0077] Referring to Figure 3 , usually a conductive member 15 is also provided on the bracket 13. The current flowing through the conductive member 15 can cause the yoke 14 to generate a corresponding magnetic field to exert a magnetic adsorption effect on the armature 12. When the armature 12 rotates around the second preset position 11 under the magnetic adsorption effect, the latching part 121 can act on the receiving part 211, thereby causing the lock 21 to rotate and unlock from the jumping buckle 22.

[0078] Based on the above embodiments of the present application, by rotatably arranging the armature 12 on the bracket 13 and using the magnetic adsorption effect of the yoke 14 to make the armature 12 rotate around the second preset position 11, thereby driving the tripping mechanism 2 to unlock. This cooperation form is simple and efficient, and can accurately and timely realize automatic control of the tripping of the tripping mechanism 2 according to the current situation, effectively improving the cooperation stability and accuracy between the tripping assembly 1 and the tripping mechanism 2.

[0079] Referring to Figure 5 , in some examples, the lock 21 includes a connecting portion 212, a locking portion 213, and an unlocking portion 214. The connecting portion 212 is rotatably connected to the first preset position 23. The locking portion 213 extends away from the first preset position 23 and towards the jumping buckle 22, and a locking groove 2131 is provided on the locking portion 213. The unlocking portion 214 extends away from the first preset position 23 and partially towards the armature 12, and a receiving portion 211 is provided on the unlocking portion 214.

[0080] Based on the above embodiments of the present application, the buckle 21 composed of the connecting portion 212, the locking portion 213 and the unlocking portion 214 has a stable structure. The connecting portion 212 is used for rotatably connecting to the first preset position 23. The locking portion 213 is used to lock with the jumping buckle 22, and the unlocking portion 214 is used to cooperate with the armature 12 to unlock the locking portion 213. Moreover, the locking portion 213 and the unlocking portion 214 are located on different sides of the connecting portion 212, which is beneficial to the realization of locking and unlocking during the rotation of the connecting portion 212, and avoids the mutual influence between the locking process and the unlocking process.

[0081] Among them, referring to Figure 1 and Figure 2 , the first preset position 23 is set on the housing 3. The connecting portion 212 is rotatably arranged at the first preset position 23. The locking portion 213 is arranged on the side of the connecting portion 212 close to the jumping buckle 22, and the locking groove 2131 is used to lock with the jumping buckle 22. During the rotation of the connecting portion 212 based on the first preset position 23, the locking portion 213 rotates around the first preset position 23 until the locking groove 2131 locks with the jumping buckle 22, and the locking of the buckle 21 and the jumping buckle 22 is completed. The unlocking portion 214 is arranged on the side of the connecting portion 212 far from the jumping buckle 22. The unlocking portion 214 includes a receiving portion 211 for cooperating with the tripping assembly 1. The receiving portion 211 is driven by the armature 12 in the tripping assembly 1 to rotate around the first preset position 23, so as to make the connecting portion 212 rotate based on the first preset position 23.

[0082] In the embodiment of the present application, when the locking portion 213 locks with the jumping buckle 22, it needs to rotate counterclockwise around the first preset position 23. When the jumping buckle 22 locks with the locking groove 2131, the buckle 21 stops rotating. When an abnormal situation occurs in the circuit and the tripping assembly 1 acts, the clapping portion 121 pushes against the receiving portion 211 to make the unlocking portion 214 rotate counterclockwise around the first preset position 23, so that the whole buckle 21 rotates counterclockwise based on the first preset position 23, so that the jumping buckle 22 disengages from the locking groove 2131 to complete the unlocking of the buckle 21 and the jumping buckle 22.

[0083] Referring to Figure 6 , in some examples, the tripping assembly 1 is installed in the housing 3. The first preset position 23 and the second preset position 11 are arranged at intervals. The height of the first preset position 23 is higher than the height of the second preset position 11 relative to the bottom of the housing 3. The setting direction of the tripping assembly 1 is from the first preset position 23 towards the second preset position 11.

[0084] Based on the above embodiments of the present application, relative to the bottom of the housing 3, the first preset position 23 and the second preset position 11 are arranged at intervals in height, which means that the tripping assembly 1 and the tripping mechanism 2 are installed at different heights in the housing 3.

[0085] Among them, the height of the first preset position 23 is higher than that of the second preset position 11 relative to the bottom of the housing 3, so that the tripping assembly 1 can be inclined, that is, the tripping assembly 1 extends obliquely from the second preset position 11 to the first preset position 23. In the inclined tripping assembly 1, the lengths of the bracket 13, the yoke 14, and the conductive member 15 that cooperates with the yoke 14 are all increased. The increase in the cooperation length of the conductive member 15 and the yoke 14 is beneficial to improving the magnetic attraction of the yoke 14 to the armature 12, and can more stably adsorb the armature 12 when an abnormality occurs in the circuit.

[0086] Specifically, referring to Figure 1 , Figure 2 and Figure 6 , relative to the bottom of the housing 3, the first preset position 23 is located on the right side of the second preset position 11, and the height of the first preset position 23 is higher than that of the second preset position 11. The tripping mechanism 2 is rotatably connected to the first preset position 23. After the tripping assembly 1 is installed on the housing 3, the second preset position 11 on the bracket 13 in the tripping assembly 1 is located on the left side of the first preset position 23 and lower than the first preset position 23. The setting direction of the bracket 13 faces the first preset position 23. The armature 12, the yoke 14, and the conductive member 15 that cooperates with the yoke 14 installed on the bracket 13 all face the first preset position 23.

[0087] Such an inclined setting form effectively extends the cooperation length of the yoke 14 and the conductive member 15, increases the magnetic field that can be generated on the yoke 14, and thus more effectively increases the magnetic attraction of the yoke 14 to the armature 12, ensuring that the armature 12 can be snapped in time and quickly, so as to apply sufficient force to the receiving portion 211 of the latch 21 to unlock the latch 21, and improves the reliability of the cooperation between the tripping assembly 1 and the tripping mechanism 2.

[0088] Referring to Figure 1 , Figure 2 and Figure 6 , the embodiment of the present application further provides a circuit breaker, including a housing 3, a tripping mechanism 2, and the above-mentioned tripping assembly 1. The tripping assembly 1 and the tripping mechanism 2 are arranged in the housing 3.

[0089] Based on the above embodiment of the present application, applying the above-mentioned tripping assembly 1 in the circuit breaker can cooperate with the tripping mechanism 2 more stably, improve the reliability of the tripping assembly 1 driving the tripping mechanism 2 to trip, ensure that the tripping mechanism 2 can trip in time when an abnormality occurs in the circuit where the circuit breaker is located, so as to disconnect the circuit breaker, and improve the use stability and safety of the circuit breaker.

[0090] The above are only the preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A trip assembly, characterized in that, The tripping mechanism is arranged in cooperation with the tripping mechanism, wherein the tripping mechanism comprises a lock buckle and a jump buckle, wherein the lock buckle can be relatively locked with the jump buckle, and the lock buckle is rotatably connected to a first preset position; The trip assembly includes an armature rotatably connected to a second preset position, the armature extends toward the position of the lock buckle and forms a snap-fit portion, and the lock buckle is provided with a receiving portion adapted to the snap-fit portion; When the lock buckle and the jump buckle are relatively locked, the snap-fitting part and the receiving part are spaced apart, or the snap-fitting part abuts against the receiving part; When the trip assembly triggers the trip, the armature rotates and drives the snapping portion to move toward the receiving portion, and the snapping portion pushes the receiving portion until the lock buckle and the jump buckle are relatively unlocked.

2. The trip assembly according to claim 1, characterized in that, The snapping part is provided with a snapping surface, and the receiving part is provided with a receiving surface. The snapping surface is a plane, and the receiving surface is an arc surface. The receiving surface can be tangent to the snapping surface.

3. The trip assembly according to claim 2, wherein, The armature includes a main body and a snap-fitting portion, wherein the main body is rotatably connected to the second preset position, and the snap-fitting portion is arranged at an end of the main body away from the second preset position.

4. The trip assembly according to claim 3, characterized in that, The flapping part includes a first folding plate and a second folding plate, wherein the first folding plate is connected to the main body and is arranged at an angle; The second folding plate is connected to an end of the first folding plate away from the main body, the second folding plate is arranged at an angle to the first folding plate, and the clasping surface is arranged on the second folding plate.

5. The trip assembly according to claim 4, wherein, The included angle between the first folding plate and the main body is an obtuse angle, and the included angle between the second folding plate and the first folding plate is an obtuse angle.

6. The trip assembly according to claim 4, wherein, The intersection position between the first folding plate and the main body is an arc transition, and the intersection position between the second folding plate and the first folding plate is an arc transition.

7. The trip assembly according to any one of claims 1-6, characterized in that, The trip assembly further includes a bracket and a yoke, wherein the bracket is mounted on the housing, the yoke is mounted on the bracket, and the second preset position is arranged on the bracket; The armature is rotatably connected to the bracket, and at least a portion of the armature is spaced apart from the yoke.

8. The trip assembly according to claim 7, wherein, The lock buckle comprises a connecting portion, a locking portion and an unlocking portion, the connecting portion is rotatably connected to the first preset position, the locking portion is away from the first preset position and extends toward the direction of the buckle tripping, and a locking groove is provided on the locking portion; The unlocking portion is away from the first preset position and partially extends toward the armature, and the receiving portion is arranged on the unlocking portion.

9. The trip assembly according to claim 8, wherein, The trip assembly is installed in the shell, the first preset position is spaced apart from the second preset position, the height of the first preset position is higher than the height of the second preset position relative to the bottom of the shell, and the setting direction of the trip assembly is from the first preset position toward the second preset position.

10. A circuit breaker, characterized in that, It comprises a housing, a tripping mechanism and a tripping assembly as claimed in any one of claims 1 to 9, wherein the tripping assembly and the tripping mechanism are arranged in the housing.

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