Tripping assembly and circuit breaker

Abstract

The utility model discloses a tripping assembly and a circuit breaker, and relates to the field of low-voltage electrical technology, the tripping assembly comprises a conductive plate, and the conductive plate comprises a wiring part, a conductive part and a static contact part which are integrally arranged. The wiring part can be matched with a wiring frame to form a wiring terminal, the conductive part is used for connecting the wiring part and the static contact part, and the static contact part can be connected with a moving contact. The two sides of the conductive part are provided with flanges and form magnet yokes. According to the tripping assembly and the circuit breaker provided by the invention, the number of parts can be reduced, and the structure and assembly operation are simplified.

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] An electromagnetic release arranged on a circuit breaker enables the circuit breaker to have functions of leakage protection and short-circuit protection. When a normal current passes through the circuit, the electromagnetic release does not act. When a short circuit occurs in the circuit and the current exceeds a preset value, the electromagnetic release acts to disconnect the circuit breaker.

[0003] The existing electromagnetic release includes structures such as a bracket, a yoke, a conductive member, an armature, and an elastic member. The yoke, the conductive member, the armature, and the elastic member are all mounted on the bracket. The number of parts is large, the assembly process is relatively complex, and the assembly stability is relatively low. Summary of the Utility Model

[0004] The purpose of this application is to provide a tripping component and a circuit breaker, which can reduce the number of parts, simplify the structure and assembly operation.

[0005] In a first aspect, an embodiment of this application provides a tripping component, including a conductive plate. The conductive plate includes a wiring portion, a conductive portion, and a static contact portion that are integrally provided. The wiring portion can cooperate with a wiring frame to form a wiring terminal. The conductive portion is used to connect the wiring portion and the static contact portion. The static contact portion can be connected to a moving contact. Flanges are provided on both sides of the conductive portion to form a yoke.

[0006] Based on the above embodiment of this application, the conductive plate formed by integrally molding the wiring portion, the conductive portion, and the static contact portion reduces the connection structure between each component, has the characteristics of compact structure and convenient assembly. Moreover, by forming a yoke by setting flanges on the conductive portion, the function of the yoke can be achieved while realizing current conduction, effectively simplifying the structure of the tripping component, facilitating the combination of the tripping component and facilitating the assembly of the tripping component into the circuit breaker, and effectively improving the assembly efficiency.

[0007] In an optional embodiment, the static contact portion and the conductive portion are arranged at an angle. The static contact portion is provided with a static contact point and an arc guide angle. The arc guide angle is located at one end of the static contact portion away from the conductive portion. The static contact portion and the arc guide angle are integrally provided.

[0008] Based on the above embodiment of this application, by integrally arranging the arc guide angle on the static contact portion, the arc generated on the static contact portion can move more smoothly along the arc guide angle. Moreover, the integral arrangement of the arc guide angle and the static contact portion is beneficial to reducing the number of parts, simplifying the structure of the conductive plate, and facilitating the assembly of the conductive plate.

[0009] In an optional embodiment, the arc guide angle is bent and extended towards the conductive portion, and the arc guide angle is spaced from the conductive portion.

[0010] In the embodiment of the present application, the tripping assembly is arranged inside the circuit breaker. An arc extinguishing grid is also arranged inside the circuit breaker. After the conductive plate is assembled into the circuit breaker, the side of the conductive part facing away from the bending directions of the first and second flanges is close to the arc extinguishing grid, and they can jointly play a role in arc initiation and arc extinguishing.

[0011] In an alternative embodiment, the tripping assembly further includes an armature and an elastic member. The armature is rotatably connected to the yoke. The armature has an open position and a clapping position relative to the yoke, and can switch between the open position and the clapping position. One end of the elastic member is connected to the yoke, and the other end is connected to the armature. The elastic member can maintain the armature at the open position.

[0012] Based on the above embodiments of the present application, the tripping assembly composed of the armature, the elastic member and the above-mentioned conductive plate has few parts and is convenient for assembly. Among them, the armature is rotatably connected to the yoke formed by the conductive plate, and the elastic member is connected between the armature and the yoke. This setting form has the characteristics of simple structure and stable cooperation.

[0013] In an alternative embodiment, a rotation connection hole and a rotation limit groove are arranged on the yoke. The rotation connection hole and the rotation limit groove are arranged opposite to each other and are respectively located on two flanges forming the yoke. A rotation column is arranged on the armature. The rotation column is rotatably connected to the rotation connection hole. The side of the armature opposite to the side where the rotation column is arranged is connected to the rotation limit groove, and the rotation limit groove can limit the rotation angle of the armature.

[0014] Based on the above embodiments of the present application, the cooperation between the rotation connection hole and the rotation column can make the armature rotatably connected to the yoke, and the setting of the rotation limit groove can limit the rotation range of the armature. Among them, only one rotation column is arranged on the armature to cooperate with the rotation connection hole to realize the rotation of the armature, and the other side of the armature is directly inserted into the rotation limit groove, and the rotation range of the armature is limited by the abutment of the groove wall of the rotation limit groove and the side wall of the armature. In this way, the rotation connection can be realized while the limiting function can be achieved, with simple structure, strong functionality, and convenient for the armature to be assembled to the yoke.

[0015] In an alternative embodiment, the two groove walls of the rotation limit groove are arranged at an angle. A limit end face is arranged on the groove wall of the rotation limit groove away from the conductive part. The limit end face is located at the notch of the rotation limit groove, and the limit end face can abut against the armature.

[0016] Based on the above embodiments of the present application, the two groove walls of the rotation limit groove can correspondingly abut against the opposite sides of the armature. The angle between the two groove walls is the rotation range of the armature. This setting form can not only meet the rotation of the armature on the yoke, but also meet the limitation of the rotation of the armature, with simple structure and strong functionality. In addition, the setting of the limit end face can prevent the armature from continuing to rotate after rotating to the open state, further improving the limiting effect of the rotation limit groove on the armature.

[0017] In an optional embodiment, a rotation connection hole is provided on both flanges, and a rotation column is provided on both sides of the armature, and the rotation column is correspondingly rotatably connected to the rotation connection hole. A limit structure is provided on the yoke or the armature, and the limit structure can limit the rotation angle of the armature.

[0018] Based on the above-mentioned embodiment of the present application, the two rotating columns and the two rotating connection holes are correspondingly connected in rotation. Compared with the above-mentioned embodiment, this embodiment is more conducive to the relative rotation between the armature and the yoke, so that the armature can rotate more smoothly from the open position to the closed position during the process of the yoke adsorbing the armature. In addition, the separately set limit structure has a limiting effect on the rotation range of the armature, which can reduce the impact on the armature rotation process and improve the reliability of the rotation cooperation between the armature and the yoke.

[0019] In an optional embodiment, both flanges are provided with a rotation connection hole, a rotating shaft is provided in the rotation connection hole, a plug-in through hole is provided on the armature, and the armature is rotatably connected to the rotating shaft through the plug-in through hole. A limiting structure is provided on the yoke or the armature, and the limiting structure can limit the rotation angle of the armature.

[0020] Based on the above-mentioned embodiments of the present application, a rotating shaft is arranged on the yoke and the armature is rotatably connected to the rotating shaft. This can reduce the impact of dust or debris from armature wear on the rotating connection of the release assembly during long-term use, improve the stability of the armature rotating connection, and this connection method has a simple structure, is easy to assemble, and has high practicality.

[0021] In an optional embodiment, the elastic member is a tension spring, a first connecting portion is provided on the yoke, a second connecting portion is provided on the side of the armature facing away from the yoke, the first end of the tension spring is connected to the first connecting portion, and the second end of the tension spring is connected to the second connecting portion, or the elastic member is a torsion spring, and the torsion spring is sleeved on the rotating column.

[0022] Based on the above-mentioned embodiments of the present application, a tension spring is provided to apply a pulling force to the side of the armature away from the yoke, so that the armature can be maintained in the open position when the trip assembly is in a normal state. When the magnetic field force applied by the yoke to the armature is greater than the pulling force of the tension spring, the armature rotates to the snap-on position. This can ensure the normal operation of the trip assembly, prevent the armature from shaking or rotating at will, causing it to rotate to the snap-on position prematurely, and improve the accuracy of the operation of the trip assembly.

[0023] In a second aspect, an embodiment of the present application further provides a circuit breaker, comprising a housing, an arc extinguishing assembly and the above-mentioned tripping assembly, wherein the arc extinguishing assembly and the tripping assembly are installed in the housing, and the arc striking angle on the conductive plate extends to the arc extinguishing assembly.

[0024] Based on the above embodiments of the present application, the circuit breaker with the above trip assembly simplifies the structure of the trip assembly, reduces the number of parts, effectively improves the assembly efficiency of the trip assembly on the circuit breaker, and thus is conducive to improving the overall assembly efficiency of the circuit breaker. Moreover, the trip assembly has high action stability, as specifically described in the foregoing embodiments, that is, adopting this trip assembly can effectively improve the stability and reliability of the circuit breaker for controlling on and off. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] 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 thus 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.

[0026] Figure 1 It is a schematic diagram of the overall structure of the trip assembly provided by the embodiment of the present application.

[0027] Figure 2 It is another view of the schematic diagram of the overall structure of the trip assembly provided by the embodiment of the present application.

[0028] Figure 3 It is a schematic diagram of the structure of the armature provided by the embodiment of the present application.

[0029] Figure 4 It is a schematic diagram of the structure of the conductive plate provided by the embodiment of the present application.

[0030] Figure 5 It is a schematic diagram of the structure of another embodiment of the conductive plate provided by the embodiment of the present application.

[0031] Figure 6 It is a schematic diagram of the structure of another embodiment of the armature provided by the embodiment of the present application.

[0032] Figure 7 It is a schematic diagram of the structure of the trip assembly installed in the circuit breaker housing provided by the embodiment of the present application.

[0033] Description of the reference numerals:

[0034] 100, trip assembly; 200, circuit breaker; 201, housing; 1, conductive plate; 11, wiring part; 12, conductive part; 13, static contact part; 131, static contact point; 132, arc guiding angle; 14, magnetic yoke; 141, first flanging; 142, second flanging; 143, rotation connection hole; 144, rotation limit groove; 1441, limit end face; 145, first connection part; 1451, first hanging groove; 2, armature; 21, rotation column; 22, second connection part; 221, second hanging groove; 3, elastic member. Detailed implementation manners

[0035] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some but not all of the embodiments of the present application. The components of the embodiments of the present application usually described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0036] 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 claimed present application, but merely represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts fall within the scope of protection of the present application.

[0037] It should be noted that: like reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0038] In the description of the present application, it should be noted that the orientation or positional relationship indicated by terms such as "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this application is usually placed when in use. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying 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 to the present application. In addition, terms such as "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0039] In the description of the present application, it should also be noted that unless otherwise clearly specified and limited, the terms "arranged", "connected" 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 elements. 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.

[0040] Existing electromagnetic release devices usually include parts such as a bracket, a yoke, a conductive member, an armature and an elastic member. The yoke, the conductive member, the armature and the elastic member are all mounted on the bracket. When the current on the conductive member is normal, the electromagnetic force generated by the yoke is not sufficient to overcome the elastic force of the elastic member on the armature, and the armature cannot be adsorbed. When the current on the conductive member reaches a preset value, the electromagnetic force generated on the yoke is greater than the elastic force of the elastic member on the armature, and the armature is driven by the electromagnetic force, thereby driving the release mechanism in the circuit breaker to trip so that the circuit breaker is disconnected.

[0041] However, the existing electromagnetic trip devices have a large number of parts and a relatively complex structure, which is inconvenient for rapid assembly, and the assembly stability is relatively low, affecting the production efficiency of the circuit breaker.

[0042] Based on this, the embodiments of the present application provide a trip assembly and a circuit breaker, which can reduce the number of parts and simplify the structure and assembly operation.

[0043] 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 accompanying drawings.

[0044] Please refer to Figure 1 and Figure 2 , this embodiment provides a trip assembly 100, including a conductive plate 1. The conductive plate 1 includes a wiring portion 11, a conductive portion 12, and a static contact portion 13 that are integrally provided. The wiring portion 11 can cooperate with a wiring frame to form a wiring terminal. The conductive portion 12 is used to connect the wiring portion 11 and the static contact portion 13. The static contact portion 13 can be connected to a moving contact. Flanges are provided on both sides of the conductive portion 12 to form a magnetic yoke 14.

[0045] Based on the above embodiment of the present application, the conductive plate 1 integrally formed by the wiring portion 11, the conductive portion 12, and the static contact portion 13 reduces the connection structure between components, has the characteristics of a compact structure and convenient assembly. Moreover, by forming the magnetic yoke 14 by setting flanges on the conductive portion 12, the function of the magnetic yoke 14 can be achieved while realizing current conduction, effectively simplifying the structure of the trip assembly 100, facilitating the combination of the trip assembly 100 and facilitating the assembly of the trip assembly 100 into the circuit breaker, and effectively improving the assembly efficiency.

[0046] Refer to Figure 1 , the conductive plate 1 is a long strip plate-like structure. The wiring portion 11 is located at the first end of the conductive plate 1. The wiring portion 11 can be combined with the wiring frame in the circuit breaker to form a wiring terminal to realize the function of accessing current. The static contact portion 13 is located at the second end of the conductive plate 1. The static contact portion 13 can cooperate with the moving contact in the circuit breaker. After the moving contact contacts the static contact, the circuit breaker is in a conducting state. At this time, current passes through the conductive plate 1, thereby generating a magnetic field on the magnetic yoke 14.

[0047] Refer to Figure 1 and Figure 2, the conductive part 12 is located between the wiring part 11 and the static contact part 13. Flanges are provided on both sides of the conductive part 12. The two flanges correspond to the first flange 141 and the second flange 142 respectively. The first flange 141 and the second flange 142 are arranged oppositely and have the same folding direction and size. The first flange 141, the second flange 142 and the part of the conductive part 12 therebetween together form a yoke 14. When an electric current passes through the conductive plate 1, the current passes through the conductive part 12 and forms a magnetic field between the first flange 141 and the second flange 142, so that the yoke 14 can provide an electromagnetic force to drive the armature 2 in the trip assembly 100 to act, realizing the tripping function of the trip assembly 100.

[0048] Referring to Figure 2 , in some examples, the static contact part 13 is arranged at an angle with the conductive part 12. A static contact point 131 and an arcing horn 132 are provided on the static contact part 13. The arcing horn 132 is located at one end of the static contact part 13 away from the conductive part 12, and the static contact part 13 and the arcing horn 132 are integrally arranged.

[0049] Based on the above embodiments of the present application, by integrally arranging the arcing horn 132 on the static contact part 13, the arc generated on the static contact part 13 can move more smoothly along the arcing horn 132. Compared with the traditional method of separately arranging the static contact part 13 and the arcing horn 132, the integral arrangement of the arcing horn 132 and the static contact part 13 is beneficial to reducing the number of parts, simplifying the structure of the conductive plate 1, and facilitating the assembly of the conductive plate 1.

[0050] The static contact part 13 is arranged at an angle with the conductive part 12, that is, the static contact part 13 is bent relative to the conductive part 12 to different directions so as to cooperate with the moving contact in the circuit breaker. Among them, the static contact point 131 provided on the static contact part 13 is used for specific contact with the moving contact.

[0051] Referring to Figure 2 , the arcing horn 132 is arranged at one end of the static contact part 13 away from the conductive part 12. The arc generated on the static contact point 131 can be guided by the arcing horn 132 to one end away from the conductive part 12, thereby preventing the arc from moving to the conductive part 12 and causing damage to the conductive part 12 and other components. The integral arrangement of the arcing horn 132 and the static contact part 13 facilitates the smooth movement of the arc to the end of the arcing horn 132 after the arc is generated, and reduces the setting of separate parts, making the structure of the conductive plate 1 more compact and the assembly of the trip assembly 100 more convenient.

[0052] Referring to Figure 1 and Figure 2 , in some examples, the arcing horn 132 is bent and extended in the direction towards the conductive part 12. The arcing horn 132 and the conductive part 12 are arranged at intervals, and the distance between the arcing horn 132 and the conductive part 12 is less than the tripping distance.

[0053] In the embodiment of the present application, the tripping assembly 100 is disposed inside the circuit breaker. An arc extinguishing grid (not shown in the figure) is usually also disposed inside the circuit breaker. After the conductive plate 1 is assembled into the circuit breaker, one side of the conductive portion 12 away from the bending directions of the first flanging 141 and the second flanging 142 is close to the arc extinguishing grid, and can jointly play a role in arc initiation and arc extinguishing with the arc extinguishing grid.

[0054] Based on the above embodiments of the present application, by bending and extending the arc guiding angle 132 towards the direction where the conductive portion 12 is located, so as to guide the arc to the positions where the conductive portion 12 and the arc extinguishing grid are located. In addition, the distance between the arc guiding angle 132 and the conductive portion 12 is set to be less than the tripping distance, which facilitates the rapid transfer of the arc from the arc guiding angle 132 to between the conductive portion 12 and the arc extinguishing grid, and prevents the arc from damaging other components.

[0055] Specifically, referring to Figure 2 , the bending direction of the static contact portion 13 relative to the conductive portion 12 is opposite to the folding directions of the first flanging 141 and the second flanging 142, that is, it bends towards the direction away from the conductive portion 12. The arc guiding angle 132 is disposed at the end of the static contact portion 13 away from the conductive portion 12, and the arc guiding angle 132 bends towards the direction close to the conductive portion 12. In this way, the formed static contact portion 13 not only satisfies the conductive function but also realizes the arc guiding function, and has high practicability.

[0056] Referring to Figure 1 and Figure 2 , in some examples, the tripping assembly 100 further includes an armature 2 and an elastic member 3. The armature 2 is rotatably connected to the yoke 14. The armature 2 has an open position and a clapping position relative to the yoke 14, and can switch between the open position and the clapping position. One end of the elastic member 3 is connected to the yoke 14, and the other end is connected to the armature 2. The elastic member 3 can maintain the armature 2 in the open position.

[0057] Based on the above embodiments of the present application, the tripping assembly 100 composed of the armature 2, the elastic member 3 and the above-mentioned conductive plate 1 has few parts and is convenient for assembly. Among them, the armature 2 is rotatably connected to the yoke 14 formed by the conductive plate 1, and the elastic member 3 is connected between the armature 2 and the yoke 14. This setting form has the characteristics of simple structure and stable cooperation.

[0058] Specifically, one end of the armature 2 is rotatably connected to the yoke 14. The open position of the armature 2 relative to the yoke 14 means that the other end of the armature 2 rotates to a position away from the yoke 14. On the contrary, the clapping position of the armature 2 relative to the yoke 14 means that the other end of the armature 2 rotates to a position close to or in contact with the yoke 14.

[0059] When the circuit breaker is in the open state, no current passes through the conductive plate 1, and the armature 2 is in the open position relative to the yoke 14. When current passes through the conductive plate 1, the electromagnetic force generated on the yoke 14 increases, which can exert an adsorption force on the armature 2 to cause the armature 2 to rotate to the closing position.

[0060] Further, referring to Figure 1 and Figure 2 , one end of the elastic member 3 is connected to a position on the yoke 14 far from the conductive portion 12, and the other end is connected to the side of the armature 2 facing away from the yoke 14. In this way, the elastic force of the elastic member 3 can maintain the armature 2 in the open position, ensuring that the armature 2 is always in the open position when the circuit breaker is in the open state.

[0061] After the circuit breaker is connected, when the current passing through the conductive plate 1 is less than the preset value, the electromagnetic force generated on the yoke 14 is less than the pulling force of the elastic member 3. At this time, the yoke 14 cannot adsorb the armature 2 to cause the armature 2 to rotate.

[0062] When the current passing through the conductive plate 1 reaches the preset value, the electromagnetic force generated by the yoke 14 is greater than the pulling force of the elastic member 3. At this time, the yoke 14 adsorbs the armature 2 to cause the armature 2 to rotate to the closing position, thereby realizing the function of the tripping assembly 100 and disconnecting the circuit breaker.

[0063] Among them, the preset value of the current is the rated current of the circuit breaker. When leakage or short circuit occurs in the circuit where the circuit breaker is located, the current changes suddenly, causing the magnetic field force generated on the yoke 14 to increase, and then adsorbing the armature 2 to the closing position to achieve the tripping and disconnection of the circuit breaker.

[0064] Referring to Figure 3 and Figure 4 , in some examples, the yoke 14 is provided with a rotation connection hole 143 and a rotation limiting groove 144. The rotation connection hole 143 and the rotation limiting groove 144 are oppositely arranged and are respectively located on two flanges forming the yoke 14. The armature 2 is provided with a rotation post 21. The rotation post 21 is rotatably connected to the rotation connection hole 143. The side of the armature 2 opposite to the rotation post 21 is connected to the rotation limiting groove 144, and the rotation limiting groove 144 can limit the rotation angle of the armature 2.

[0065] Based on the above embodiments of the present application, the cooperation between the rotation connection hole 143 and the rotation column 21 enables the armature 2 to be rotatably connected to the yoke 14, and the provision of the rotation limit groove 144 can limit the rotation range of the armature 2. Among them, only one rotation column 21 is provided on the armature 2 to cooperate with the rotation connection hole 143 to achieve the rotation of the armature 2, while the other side of the armature 2 is directly inserted into the rotation limit groove 144, and the rotation range of the armature 2 is limited by the abutment of the groove wall of the rotation limit groove 144 against the side wall of the armature 2. In this way, while realizing the rotation connection, it can also play a limiting role, with a simple structure, strong functionality, and facilitating the assembly of the armature 2 to the yoke 14.

[0066] Specifically, referring to Figure 4 , the rotation connection hole 143 is provided on the first flanging 141, the rotation limit groove 144 is provided on the second flanging 142, and the positions of the rotation connection hole 143 and the rotation limit groove 144 are opposite. Referring to Figure 3 , only one side of the armature 2 is provided with a rotation column 21. The side where the rotation column 21 is provided is rotatably connected to the rotation connection hole 143, and the other side is directly inserted into the rotation limit groove 144. During the rotation of the armature 2, the rotation column 21 rotates in the rotation connection hole 143, and the other side of the armature 2 in the rotation limit groove 144 can limit the rotation range of the armature 2 by abutting against the groove wall of the rotation limit groove 144, preventing the situation that the yoke 14 cannot adsorb the armature 2 due to the excessive rotation range of the armature 2.

[0067] In the embodiments of the present application, referring to Figure 3 , the rotation column 21 is provided as a quadrangular prism, and the rotation connection hole 143 is provided as a circular hole. The diameter of the circumscribed circle of the quadrangular prism matches the diameter of the rotation connection hole 143, so that the quadrangular prism can also rotate smoothly in the rotation connection hole 143. The rotation column 21 is provided as a quadrangular prism because the armature 2 is a plate-like structure, and the quadrangular prism can be formed only by blanking during the processing and manufacturing process, which is simpler than setting it as a cylindrical form and is convenient for processing and forming. Of course, the rotation column 21 can also be provided as a cylinder or other styles of prisms as long as the rotation condition is satisfied.

[0068] Referring to Figure 4 , in some examples, the two groove walls of the rotation limit groove 144 are arranged at an angle, and a limit end face 1441 is provided on the groove wall of the rotation limit groove 144 away from the conductive part 12. The limit end face 1441 is located at the groove opening of the rotation limit groove 144, and the limit end face 1441 can abut against the armature 2.

[0069] Based on the above embodiments of the present application, the two groove walls of the rotation limiting groove 144 can correspondingly abut against the opposite sides of the armature 2, and the angle between the two groove walls is the rotation range of the armature 2. This setting form can not only meet the rotation of the armature 2 on the yoke 14, but also meet the limitation of the rotation of the armature 2, with a simple structure and strong functionality. In addition, the setting of the limiting end face 1441 can prevent the armature 2 from continuing to rotate after rotating to the open state, further improving the limiting effect of the rotation limiting groove 144 on the armature 2.

[0070] The included angle between the two groove walls of the rotation limiting groove 144 is set to an acute angle, and the specific included angle can be adjusted according to the cooperation between the armature 2 and the yoke 14. Exemplarily, the included angle can be 15°, 30° or 45°, etc. In this way, the rotatable angle of the armature 2 is limited to 15°, 30° or 45°, etc., that is, taking the clapping position of the armature 2 on the yoke 14 as the reference, the armature 2 can rotate 15°, 30° or 45° relative to the clapping position.

[0071] Limiting the rotation of the armature 2 within a small angle is beneficial for the yoke 14 to adsorb the armature 2 in time. When the current passing through the conductive plate 1 reaches the preset value, the magnetic field generated on the yoke 14 can act on the armature 2 and make the armature 2 rotate from the open position to the clapping position, avoiding the influence of the excessive distance between the armature 2 and the yoke 14 on the adsorption effect of the yoke 14 on the armature 2.

[0072] Of course, the larger the rotatable angle of the armature 2, the greater the electromagnetic force required to rotate to the clapping position, which can correspond to different specifications of circuit breakers and has strong applicability.

[0073] Refer to Figure 4 , the first groove wall of the rotation limiting groove 144 is the side wall of the second flanging 142 away from the conductive part 12, the second groove wall of the rotation limiting groove 144 is opposite to it, the limiting end face 1441 is arranged at the position of the second groove wall close to the opening of the rotation limiting groove 144, the limiting end face 1441 is connected to the second groove wall and has a certain included angle, and when the armature 2 is in the clapping position, the armature 2 abuts against the first groove wall.

[0074] When the armature 2 is in the open position, the armature 2 abuts against the second groove wall. When the armature 2 is forced to continue rotating, the side of the armature 2 abutting against the second groove wall is abutted by the limiting end face 1441, and the limiting end face 1441 can block the further rotation of the armature 2 in the direction away from the yoke 14.

[0075] Refer to Figure 5 and Figure 6 , in some examples, rotation connection holes 143 are provided on both flangings, rotation posts 21 are provided on both sides of the armature 2, and the rotation posts 21 are correspondingly rotationally connected to the rotation connection holes 143. A limiting structure is provided on the yoke 14 or the armature 2, and the limiting structure can limit the rotation angle of the armature 2.

[0076] Based on the above-mentioned embodiment of the present application, the two rotating columns 21 and the two rotating connection holes 143 are correspondingly connected in rotation. Compared with the above-mentioned embodiment, this embodiment is more conducive to the relative rotation between the armature 2 and the yoke 14, so that the armature 2 can be more smoothly rotated from the open position to the snap-on position during the process of the yoke 14 adsorbing the armature 2. In addition, the limit structure is separately set to limit the rotation range of the armature 2, which can reduce the impact on the rotation process of the armature 2 and improve the reliability of the rotation cooperation between the armature 2 and the yoke 14.

[0077] Specifically, refer to Figure 5 and Figure 6 The first flange 141 and the second flange 142 are both provided with rotation connection holes 143 and are located at relative positions. Rotation connection columns are provided on both sides of the armature 2. The armature 2 is installed between the first flange 141 and the second flange 142. The rotation connection columns on both sides of the armature 2 are correspondingly rotationally connected in the rotation connection holes 143, so that the two sides of the armature 2 maintain stable rotational cooperation with the yoke 14.

[0078] This arrangement requires a separate limit structure, which can be provided on the yoke 14 or on the armature 2. Exemplarily, an extension arm is provided on the side of the first flange 141 away from the conductive portion 12, and the extension arm extends from the first flange 141 to the direction of the second flange 142, that is, the extension arm extends between the first flange 141 and the second flange 142, so that the armature 2 can abut against the side of the armature 2 away from the conductive portion 12 during the rotation of the armature 2, thereby limiting the rotation of the armature 2.

[0079] For example, both flanges are provided with a rotation connection hole 143, a rotating shaft (not shown in the figure) is provided in the rotation connection hole 143, and an insertion through hole is provided on the armature 2, and the armature 2 is rotationally connected to the rotating shaft through the insertion through hole. A limiting structure is provided on the yoke 14 or the armature 2, and the limiting structure can limit the rotation angle of the armature 2.

[0080] Based on the above-mentioned embodiments of the present application, a rotational matching form in which a rotating shaft is provided on the yoke 14 and the armature 2 is rotationally connected to the rotating shaft is adopted. This can reduce the influence of dust or debris from the wear of the armature 2 on the rotational connection of the trip assembly 100 during long-term use, improve the stability of the rotational connection of the armature 2, and this connection method has a simple structure, is easy to assemble, and has high practicality.

[0081] Specifically, the rotation connection holes 143 on the first flanging 141 and the second flanging 142 correspond to each other. The two ends of the rotating shaft are correspondingly inserted into the two rotation connection holes 143, and part of the rotating shaft is located between the first flanging 141 and the second flanging 142. On both sides of the armature 2 corresponding to the first flanging 141 and the second flanging 142, ears are provided, and the insertion through holes can be arranged on the ears. The armature 2 is rotatably connected to the rotating shaft through the insertion through holes on the ears.

[0082] Compared with the situation where the armature 2 is directly rotatably connected to the first flanging 141 and the second flanging 142 in the foregoing embodiment, on the one hand, in this embodiment, the armature 2 can rotate more smoothly, reducing the direct influence of the current passing through the conductive plate 1 on the armature 2.

[0083] On the other hand, it can reduce the influence of sundries such as dust or debris generated by rotational wear on the normal rotation of the armature 2, improve the reliability of the rotation of the armature 2 relative to the magnetic yoke 14, and ensure that the armature 2 can rotate from the open position to the clapping position in a timely manner. The same as the foregoing embodiment, adopting this setting form also requires setting a separate limiting structure, and the specific structure can refer to the foregoing content and will not be elaborated here.

[0084] Refer to Figure 2 In some examples, the elastic member 3 is a tension spring. A first connection portion 145 is provided on the magnetic yoke 14, and a second connection portion 22 is provided on the side of the armature 2 facing away from the magnetic yoke 14. The first end of the tension spring is connected to the first connection portion 145, and the second end of the tension spring is connected to the second connection portion 22.

[0085] Refer to Figure 2 The first connection portion 145 is a column extending from the second flanging 142, and the second connection portion 22 is a column provided on the side of the armature 2 facing away from the magnetic yoke 14. The elastic member 3 in the present application is set as a tension spring. The first end of the tension spring is connected to the first connection portion 145, and the second end is connected to the second connection portion 22, thereby applying a pulling force to the armature 2 to make the armature 2 tend to rotate in a direction away from the magnetic yoke 14.

[0086] When the current passing through the conductive plate 1 is less than the preset value, the magnetic force applied by the magnetic field generated on the magnetic yoke 14 to the armature 2 is less than the pulling force of the tension spring on the armature 2, that is, the armature 2 will not rotate towards the clapping position. When the current passing through the conductive plate 1 reaches the preset value, the magnetic force applied by the magnetic yoke 14 to the armature 2 is greater than the pulling force of the tension spring, and immediately causes the armature 2 to rotate towards the clapping position.

[0087] Refer to Figure 3 and Figure 4A first hanging groove 1451 is provided on the first connecting portion 145, and the first end of the tension spring can be hung or sleeved in the first hanging groove 1451, which can fix the first end of the tension spring while bearing the tension of the tension spring, prevent the tension spring from loosening or falling off, and improve the connection stability of the tension spring.

[0088] The second connecting portion 22 is provided with a second hanging groove 221. The column can withstand the tension of the tension spring. The second hanging groove 221 is used to fix the second end of the tension spring. It has the same technical effect as the aforementioned first connecting portion 145 and will not be repeated here.

[0089] Based on the above-mentioned embodiments of the present application, a tension spring is provided to apply a pulling force to the side of the armature 2 away from the yoke 14, so that the armature 2 can be maintained in the open position when the trip assembly 100 is in a normal state. When the magnetic field force applied by the yoke 14 to the armature 2 is greater than the pulling force of the tension spring, the armature 2 rotates to the snap-on position. This can ensure the normal operation of the trip assembly 100, prevent the armature 2 from shaking or rotating at will, causing it to rotate to the snap-on position prematurely, and improve the accuracy of the operation of the trip assembly 100.

[0090] Exemplarily, the elastic member 3 can also be configured as a torsion spring, which can be sleeved on the rotating column 21 or the rotating shaft. The torsion spring usually has a first torsion arm and a second torsion arm. The first torsion arm abuts against the armature 2, and the second torsion arm abuts against the yoke 14. In this way, an elastic force can also be applied to the armature 2 so that the armature 2 cannot rotate at will, which has the same effect as the aforementioned tension spring and will not be repeated here.

[0091] The embodiment of the present application also provides a circuit breaker 200, including a housing 201, an arc extinguishing assembly (not shown in the figure) and the above-mentioned tripping assembly 100, the arc extinguishing assembly and the tripping assembly 100 are installed in the housing 201, and the arc striking angle 132 on the conductive plate 1 extends to the arc extinguishing assembly.

[0092] Based on the above-mentioned embodiments of the present application, the circuit breaker 200 having the above-mentioned trip assembly 100 effectively improves the assembly efficiency of the trip assembly 100 on the circuit breaker 200 by simplifying the structure of the trip assembly 100 and reducing the number of parts, thereby facilitating the improvement of the overall assembly efficiency of the circuit breaker 200. In addition, the trip assembly 100 has a high action stability, which has been specifically described in the above-mentioned embodiments, so the use of the trip assembly 100 can effectively improve the stability and reliability of the circuit breaker 200 in controlling the on and off.

[0093] Specifically, the trip assembly 100 and the arc extinguishing assembly are installed in the housing 201, the arc extinguishing assembly is located on the side of the yoke 14 away from the armature 2, and the arc striking angle 132 is bent relative to the static contact part 13 and extends to the arc extinguishing assembly, so as to smoothly guide the arc generated on the static contact part 13 to the arc extinguishing assembly to achieve arc extinguishing. The conductive plate 1 arranged in this way can not only realize the conductive function, but also can cause the armature 2 to generate an action to achieve tripping through the yoke 14, and can directly guide the arc generated on the static contact part 13 after tripping to the arc extinguishing assembly, which has strong functionality, simple structure and high practicality.

[0094] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A tripping component, characterized in that, It includes a conductive plate, wherein the conductive plate includes a wiring portion, a conductive portion and a static contact portion which are integrally arranged; The wiring part can cooperate with the wiring frame to form a wiring terminal, the conductive part is used to connect the wiring part and the static contact part, and the static contact part can be connected to the moving contact; Both sides of the conductive part are provided with flanges to form a yoke.

2. The trip assembly according to claim 1, characterized in that, The static contact part and the conductive part are arranged at an angle. The static contact part is provided with a static contact point and an arc striking angle. The arc striking angle is located at one end of the static contact part away from the conductive part. The static contact part and the arc striking angle are arranged integrally.

3. The trip assembly according to claim 2, characterized in that, The arc starting angle is bent and extended toward the direction of the conductive portion, and the arc starting angle is spaced apart from the conductive portion.

4. The trip assembly according to claim 1, wherein The trip assembly also includes: An armature is rotatably connected to the yoke, the armature has an open position and a closed position relative to the yoke, and can be switched between the open position and the closed position; An elastic member has one end connected to the yoke and the other end connected to the armature, and the elastic member can maintain the armature in the open position.

5. The trip assembly according to claim 4, characterized in that, The magnetic yoke is provided with a rotation connection hole and a rotation limiting groove, the rotation connection hole and the rotation limiting groove are arranged opposite to each other and are respectively located on two flanges forming the magnetic yoke; The armature is provided with a rotating column, which is rotatably connected to the rotating connecting hole. The side of the armature opposite to the rotating column is connected to the rotating limiting groove, and the rotating limiting groove can limit the rotating angle of the armature.

6. The trip assembly according to claim 5, characterized in that, The two groove walls of the rotation limiting groove are arranged at an angle, and a limiting end face is arranged on the groove wall of the rotation limiting groove away from the conductive part. The limiting end face is located at the groove opening of the rotation limiting groove, and the limiting end face can abut against the armature.

7. The trip assembly according to claim 4, characterized in that, The two flanges are each provided with a rotation connection hole, and both sides of the armature are provided with a rotation column, and the rotation column is correspondingly rotationally connected to the rotation connection hole; A limiting structure is provided on the yoke or the armature, and the limiting structure can limit the rotation angle of the armature.

8. The trip assembly according to claim 4, characterized in that, The two flanges are each provided with a rotation connection hole, a rotating shaft is provided in the rotation connection hole, and the armature is provided with a plug-in through hole, and the armature is rotationally connected to the rotating shaft through the plug-in through hole; A limiting structure is provided on the yoke or the armature, and the limiting structure can limit the rotation angle of the armature.

9. The trip assembly according to claim 5, characterized in that, The elastic member is a tension spring, a first connection portion is provided on the yoke, a second connection portion is provided on a side of the armature away from the yoke, a first end of the tension spring is connected to the first connection portion, and a second end of the tension spring is connected to the second connection portion; Alternatively, the elastic member is a torsion spring, and the torsion spring is sleeved on the rotating column.

10. A circuit breaker, characterized in that, It comprises a shell, an arc extinguishing assembly and a tripping assembly as described in any one of claims 1 to 9, wherein the arc extinguishing assembly and the tripping assembly are installed in the shell, and the arc striking angle on the conductive plate extends to the arc extinguishing assembly.

Images