Magnet yoke assembly, magnetic separation mechanism and circuit breaker

Abstract

The utility model provides a magnet yoke assembly, a magnetic separation mechanism and a circuit breaker, and relates to the technical field of electrical component equipment. The magnet yoke assembly comprises a magnet yoke body, an arc striking part and a static iron core. The magnet yoke body comprises a first side plate and a second side plate which are arranged at an interval. The arc striking part is connected with the first side plate. The static iron core is arranged on the side, facing the second side plate, of the first side plate. Wherein the magnet yoke body, the arc striking part and the static iron core are integrally formed, the first side plate is provided with a first mounting groove, the first mounting groove penetrates through the first side plate and the static iron core, and the first mounting groove is matched with an ejector rod of a magnetic separation mechanism. According to the magnet yoke assembly provided by the embodiment of the invention, the assembling efficiency of the magnetic separation mechanism can be improved, and the assembling efficiency of the circuit breaker is further improved.

Description

Technical Field

[0001] The present application relates to the technical field of electrical component devices, and particularly to a yoke assembly, a magnetic release mechanism and a circuit breaker. Background Art

[0002] A circuit breaker can make the circuit in an open state when a circuit fault occurs, reducing the possibility of further expansion of the circuit fault.

[0003] The circuit breaker can include a magnetic release mechanism, and the magnetic release mechanism can include a yoke and other structures. In the case of a short circuit or severe overload in the circuit, the magnetic release mechanism can act to disconnect the circuit breaker, and then the circuit is in an open state.

[0004] Based on the structure of the existing yoke, the assembly efficiency of the magnetic release mechanism is relatively low. Summary of the Utility Model

[0005] The present application provides a yoke assembly, a magnetic release mechanism and a circuit breaker to improve the assembly efficiency of the magnetic release mechanism, and further improve the assembly efficiency of the circuit breaker.

[0006] In a first aspect, the present application provides a yoke assembly, which includes a yoke body, an arc-drawing part and a static iron core. The yoke body includes a first side plate and a second side plate arranged at intervals. The arc-drawing part is connected to the first side plate. The static iron core is arranged on one side of the first side plate facing the second side plate. Among them, the yoke body, the arc-drawing part and the static iron core are integrally formed. The first side plate is provided with a first installation groove, and the first installation groove penetrates the first side plate and the static iron core, and the first installation groove is matched with the ejector rod of the magnetic release mechanism.

[0007] Based on the above, compared with the prior art, in the assembly process of the magnetic release mechanism, it is necessary to complete the mutual cooperation among the yoke, the arc-drawing part and the static iron core. In the example of the present application, the yoke body, the arc-drawing part and the static iron core are integrally formed, which can save the assembly process of the yoke body, the arc-drawing part and the static iron core, and thus improve the assembly efficiency of the magnetic release mechanism.

[0008] In addition, compared with the prior art, in the yoke, an installation hole is provided, and the ejector rod is aligned with the installation hole and passed through the installation hole. In the example of the present application, by providing the first installation groove on the first side plate, in the assembly process of the ejector rod and the yoke assembly, other structural parts of the magnetic release mechanism except the yoke assembly can be assembled outside the yoke assembly to form an assembly body. The ejector rod in the assembly body can directly enter the first installation groove from the notch of the first installation groove. Since the first installation groove is arranged on the first side plate, the first side plate is a part of the yoke assembly, and the ejector rod is a part of the assembly body, the cooperation between the ejector rod and the first installation groove can realize the cooperation between the assembly body and the yoke assembly. In the example of the present application, the cooperation between the first installation groove and the ejector rod is easier to achieve, which can improve the assembly efficiency of the magnetic release mechanism.

[0009] In some possible implementations, a receiving groove is provided on the side of the first side plate facing away from the static iron core. The ejector rod includes a stop portion, and at least a part of the stop portion can extend into the receiving groove.

[0010] Based on the above, the receiving groove can provide a receiving space for the stop portion, reduce the length of the side of the stop portion facing away from the second side plate protruding from the side of the first side plate facing away from the second side plate, reduce the possibility of the stop portion accidentally touching other structures inside the circuit breaker, and can also improve the structural compactness of the components inside the circuit breaker, which is beneficial to the miniaturization development of the circuit breaker.

[0011] In some possible implementations, at least one first guiding structure is provided at the notch of the first installation groove, and the inclination direction of the first guiding structure is adapted to the installation direction of the ejector rod assembled into the first installation groove.

[0012] Based on the above, by providing the first guiding structure, the size at the notch of the first installation groove can be made larger. Based on this, during the cooperation process between the ejector rod and the yoke assembly, the ejector rod can extend into the side with a larger size of the first installation groove, so that the time for the ejector rod to enter the first installation groove from the notch of the first installation groove is shorter, improving the cooperation efficiency between the ejector rod and the yoke assembly, and further improving the assembly efficiency of the magnetic release mechanism.

[0013] In some possible implementations, at least one first limiting structure is provided on the groove wall of the first installation groove, and the first limiting structure is provided on the side of the ejector rod facing the notch of the first installation groove.

[0014] Based on the above, when the ejector rod is in cooperation with the yoke assembly, the first limiting structure can be provided on the side of the ejector rod facing the notch of the first installation groove to reduce the possibility of the ejector rod detaching from the first installation groove during the assembly process or use process of the magnetic release mechanism, and ensure the assembly reliability of the ejector rod and the yoke assembly.

[0015] In some possible implementations, the yoke assembly is a stamping part.

[0016] Compared with setting the yoke assembly as a bent structural part, it is easy to make the strength at the bent part of the structure weak. In the example of the present application, the yoke assembly is set as a stamping part. Based on the characteristics of the stamping process, the thickness of each part of the yoke assembly can be the same, which can ensure the reliability of the yoke assembly in use.

[0017] In a second aspect, the present application provides a magnetic release mechanism, which includes a coil skeleton, an ejector rod, and the yoke assembly provided in each possible implementation of the first aspect above. The coil skeleton is installed between the first side plate and the second side plate. The first end of the coil skeleton abuts against the first side plate, and the second end of the coil skeleton is connected to the second side plate. The ejector rod is movably connected to one end of the coil skeleton facing the first side plate, and the ejector rod passes through the first installation groove.

[0018] Based on the above, compared with the prior art where mounting holes are provided in the yoke, the ejector rod is aligned with the mounting holes and passed through the mounting holes, in the example of the present application, by providing a first mounting groove on the first side plate, during the assembly process of the ejector rod and the yoke assembly, the moving iron core, coil bobbin, ejector rod, and other structural components except the yoke assembly in the magnetic release mechanism can be assembled outside the yoke assembly to form an assembly. The ejector rod in the assembly can directly enter the first mounting groove from the notch of the first mounting groove. Since the first mounting groove is provided on the first side plate, and the first side plate is a part of the yoke assembly, and the ejector rod is a part of the assembly, the cooperation between the ejector rod and the first mounting groove can achieve the cooperation between the assembly and the yoke assembly. In the example of the present application, the cooperation between the first mounting groove and the ejector rod is easier to achieve, which can improve the assembly efficiency of the magnetic release mechanism.

[0019] In some possible implementation manners, the second side plate is provided with a second mounting groove, the notch opening direction of the second mounting groove is the same as the notch opening direction of the first mounting groove, and the second end of the coil bobbin is matched with the groove wall of the second mounting groove.

[0020] Based on the above, the second end of the coil bobbin is matched with the groove wall of the second mounting groove. Since the second mounting groove is provided on the second side plate, and the second side plate is a part of the yoke assembly, the cooperation between the coil bobbin and the second mounting groove can achieve the cooperation between the coil bobbin and the yoke assembly.

[0021] Since the first mounting groove is provided on the first side plate and the second mounting groove is provided on the second side plate, and both the first side plate and the second side plate belong to the yoke assembly, by setting the notch opening direction of the second mounting groove to be the same as the notch opening direction of the first mounting groove, it is convenient to apply a force to the assembly formed by the cooperation of the moving iron core, coil bobbin, ejector rod, and other structural components except the yoke assembly, so that the assembly enters the first mounting groove from the notch of the first mounting groove and enters the second mounting groove from the notch of the second mounting groove at the same time, facilitating the assembly of the assembly and the yoke assembly.

[0022] In some possible implementation manners, the magnetic release mechanism further includes a second limiting structure, and the second limiting structure is provided on the coil bobbin. Or, the second limiting structure is provided between the coil bobbin and the yoke body.

[0023] On the basis that the first end of the coil bobbin abuts against the first side plate, through the cooperation between the second limiting structure and the yoke body, the coil bobbin can be fixed between the first side plate and the second side plate, improving the cooperation reliability between the coil bobbin and the yoke assembly, and further improving the cooperation reliability of the magnetic release mechanism.

[0024] In some possible implementations, when the second limiting structure is provided between the coil bobbin and the yoke body, the second limiting structure includes a first limiting protrusion and a first limiting groove. The first limiting protrusion is provided on the coil bobbin, the first limiting groove is provided on the yoke body, and at least a part of the first limiting protrusion is snap-fitted into the first limiting groove.

[0025] When the limiting structure is provided on the coil bobbin, the second limiting structure is provided as a second limiting protrusion, and the second limiting protrusion can be snap-fitted to the side of the second side plate facing the first side plate.

[0026] In a third aspect, an example of the present application provides a circuit breaker, which includes a housing, a contact mechanism, and the magnetic tripping mechanism provided in each possible design of the second aspect above. The contact mechanism and the magnetic tripping mechanism are both installed in the housing.

[0027] For the magnetic tripping mechanism provided in the third aspect above and each possible design of the third aspect, the beneficial effects can be referred to the beneficial effects brought by the second aspect and each possible implementation of the second aspect, which will not be elaborated here. Description of the Drawings

[0028] Figure 1 It is a schematic internal structure diagram of a circuit breaker provided by an example of the present application.

[0029] Figure 2 It is a schematic diagram of the cooperation of a magnetic tripping mechanism, a wiring board, and a static contact provided by an example of the present application.

[0030] Figure 3 It is a schematic structural diagram of a yoke assembly from a first perspective provided by an example of the present application.

[0031] Figure 4 It is a schematic structural diagram of a yoke assembly from a second perspective provided by an example of the present application.

[0032] Figure 5 It is a schematic structural diagram of a coil bobbin provided by an example of the present application.

[0033] Description of the Reference Numerals:

[0034] 100, circuit breaker; 110, housing; 120, magnetic tripping mechanism; 121, yoke assembly; 1211, first side plate; 1212, second side plate; 1213, static iron core; 1214, arc guiding part; 1215, first installation groove; 12151, first guiding structure; 1216, accommodating groove; 1217, second installation groove; 122, coil bobbin; 1221, bobbin body; 1222, baffle; 1223, second limiting structure; 123, coil; 124, ejector rod; 1241, stop part; 130, wiring board; 140, static contact. Detailed Description of the Embodiments

[0035] For the purpose of making the objectives, technical solutions and advantages of the examples of this application clearer, the technical solutions in the examples of this application will be clearly and completely described below in conjunction with the accompanying drawings in the examples of this application. Obviously, the described examples are part of the examples of this application, rather than all of the examples. All other examples obtained by those of ordinary skill in the art based on the examples in this application without creative efforts shall fall within the scope of protection of this application.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs; the terms used in the specification of this application are only for the purpose of describing specific examples and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification, claims and drawings of this application are intended to cover non-exclusive inclusion.

[0037] Reference to "example" in this context means that a particular feature, structure, or characteristic described in connection with the example can be included in at least one example of this application. The phrase "example" appearing in various places in the specification does not necessarily refer to the same example, nor is it an independent or alternative example mutually exclusive with other examples. Those skilled in the art will explicitly and implicitly understand that the examples described herein can be combined with other examples.

[0038] The term "and / or" as used herein is merely a description of the associated relationship of the associated objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: the existence of A, the simultaneous existence of A and B, and the existence of B. Additionally, the character " / " herein generally represents an "or" relationship between the associated objects before and after.

[0039] The orientation terms appearing in the following description are all the directions shown in the figures and do not limit the specific structures of the yoke assembly, magnetic release mechanism and circuit breaker of this application.

[0040] Furthermore, the terms "first", "second", etc. in the specification, claims or the above-mentioned drawings of this application are used to distinguish different objects and are not used to describe a specific order, and may explicitly or implicitly include one or more of such features.

[0041] In the description of this application, unless otherwise specified, the meaning of "plurality" refers to two or more (including two). Similarly, "multiple groups" refers to two or more groups (including two groups).

[0042] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, the "connection" or "coupling" of mechanical structures may refer to a physical connection. For example, a physical connection may be a fixed connection, such as a fixed connection through a spacer, such as a fixed connection through screws, bolts, or other spacers; a physical connection may also be a detachable connection, such as a snap connection or a snap-fit connection; a physical connection may also be an integral connection, such as a connection formed by welding, bonding, or integral molding. 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 circumstances.

[0043] A circuit breaker is an electrical component that can protect a circuit. The circuit breaker can operate when a fault such as overload or short circuit occurs in the circuit, causing the circuit to be in an open state and reducing the possibility of further expansion of the fault.

[0044] The circuit breaker may include a magnetic release mechanism and a contact mechanism. In the case of a short circuit or severe overload in the circuit, the operation of the magnetic release mechanism can cause the moving contact in the contact mechanism to separate from the static contact, causing the circuit breaker to be in the open state, and further causing the circuit to be in the open state.

[0045] Existing magnetic release mechanisms generally include structural components such as coils, coil skeletons, magnetic yokes, arc extinguishing parts, and static iron cores. Based on the structure of the existing magnetic yoke, during the assembly process of the magnetic release mechanism, it is necessary to first complete the cooperation of the coil skeleton, the coil, and other related structural components, then install the coil skeleton and the coil as a whole on the magnetic yoke, and then complete the cooperation of structural components such as the wiring board, the arc extinguishing part, and the static iron core with the coil skeleton and the coil. Based on the structure of the existing magnetic yoke, the assembly process of the magnetic release mechanism is relatively complex, the assembly efficiency is low, and thus the manufacturing cost of the circuit breaker is relatively high.

[0046] Based on the above, the present application provides an example of a magnetic yoke assembly, a magnetic release mechanism, and a circuit breaker.

[0047] In order to enable those skilled in the art to better understand the solution of the present application, the magnetic yoke assembly, the magnetic release mechanism, and the circuit breaker provided by the examples of the present application will be described clearly and completely below with reference to the drawings.

[0048] Exemplarily, the present application provides an example of a circuit breaker. Figure 1 FIG. [X] is a schematic diagram of the internal structure of a circuit breaker provided by an example of the present application. Figure 2 FIG. [Y] is a schematic diagram of the cooperation of a magnetic release mechanism, a wiring board, and a static contact provided by an example of the present application. Please refer to Figure 1 and Figure 2 , the circuit breaker 100 may include a housing 110, a contact mechanism, and a magnetic release mechanism 120. The contact mechanism and the magnetic release mechanism 120 are both installed in the housing 110.

[0049] The housing 110 may be provided with an installation cavity, and the contact mechanism, the magnetic release mechanism 120 and other structures of the circuit breaker 100 may be installed in the installation cavity.

[0050] The contact mechanism may include a moving contact and a static contact 140. The static contact 140 is fixedly connected to the housing 110, and the moving contact is movably connected to the housing 110. When the moving contact is in contact with the static contact 140, the circuit breaker 100 is in the closed state, the circuit is in the on state, and current flows through the circuit. When the moving contact is separated from the static contact 140, the circuit breaker 100 is in the open state, the circuit is in the off state, and no current passes through the circuit. The specific structure of the contact mechanism may be the same as the structure of the contact mechanism in the prior art, and the specific structure of the contact mechanism is not described in detail in this application example.

[0051] When the circuit breaker 100 is in a short circuit or severe overload, the magnetic release mechanism 120 may act, directly or indirectly driving the contact mechanism to act, so that the circuit breaker 100 is switched from the closed state to the open state.

[0052] The magnetic release mechanism 120 may include a coil bobbin 122, a push rod 124, a moving iron core and a yoke assembly 121. The push rod 124 and the moving iron core can both be movably connected to the coil bobbin 122, and the push rod 124, the moving iron core and the coil bobbin 122 can cooperate with the yoke assembly 121.

[0053] For the specific structure of the magnetic release mechanism 120, please refer to the relevant description below.

[0054] Based on the above, the housing 110 can provide an installation carrier for structures such as the contact mechanism and the magnetic release mechanism 120. The magnetic release mechanism 120 can make the circuit breaker 100 in the open state when the circuit is in a short circuit or severe overload, so that the circuit is in the off state, protecting the circuit and reducing the possibility of further expansion of faults in the circuit.

[0055] In order to enable those skilled in the art to better understand the specific structure of the magnetic release mechanism 120, the magnetic release mechanism 120 will be described in detail below on the basis of describing the structure of the yoke assembly 121.

[0056] Exemplarily, Figure 3 For a schematic diagram of the structure of a yoke assembly from a first perspective provided in this application example, please refer to Figure 2 and Figure 3, an example of the present application provides a yoke assembly 121, which may include a yoke body, an arc ignition portion 1214, and a static iron core 1213. The yoke body may include a first side plate 1211 and a second side plate 1212 arranged at intervals. The arc ignition portion 1214 is connected to the first side plate 1211. The static iron core 1213 may be disposed on one side of the first side plate 1211 facing the second side plate 1212. Among them, the yoke body, the arc ignition portion 1214, and the static iron core 1213 may be integrally formed. The first side plate 1211 is provided with a first mounting groove 1215, and the first mounting groove 1215 penetrates through the first side plate 1211 and the static iron core 1213, and the first mounting groove 1215 cooperates with the ejector rod 124 of the magnetic release mechanism 120.

[0057] The first side plate 1211 and the second side plate 1212 may cooperate to form a receiving cavity, providing a receiving space for the coil skeleton 122 and other structures in the magnetic release mechanism 120.

[0058] The first side plate 1211 and the second side plate 1212 arranged at intervals may be connected by a connecting plate. Only one connecting plate may be provided, or two or three connecting plates may be provided. As long as it is ensured that there is an opening in the yoke body, so that structures such as the coil skeleton 122 can be installed on the yoke body from the opening, the present application does not specifically limit the structure of the yoke body.

[0059] The first connecting plate is provided with a first mounting groove 1215, and the notch of the first mounting groove 1215 may have various opening directions. Exemplarily, the notch of the first mounting groove 1215 may be opened in a direction away from the arc ignition portion 1214, or the notch of the first mounting groove 1215 may be opened toward the side wall of the housing 110. The present application does not specifically limit the opening direction of the notch of the first mounting groove 1215.

[0060] During the assembly process of the magnetic release mechanism 120, the structures in the magnetic release mechanism 120 except the yoke assembly 121 may be assembled together to form an assembly, and then the cooperation between the assembly and the yoke assembly 121 is achieved through the cooperation between the ejector rod 124 and the first mounting groove 1215.

[0061] The arc ignition portion 1214 may be connected to the first side plate 1211. The arc ignition portion 1214 may be in a hook-like structure, an L-shaped structure or other structures. In the present application example, the installation position of the arc ignition portion 1214 in the circuit breaker 100 is similar to the installation position of the arc ignition portion 1214 in the prior art, and will not be described in detail here.

[0062] During the use of the circuit breaker 100, the arc ignition portion 1214 may guide the arc into the arc extinguishing chamber of the circuit breaker 100, improve the arc extinguishing efficiency of the circuit breaker 100, and reduce the possibility of the arc corroding the moving contact and the static contact 140.

[0063] The magnetic release mechanism 120 may include a moving iron core. The moving iron core may cooperate with the static iron core 1213 in the yoke assembly 121 to achieve the contact or separation between the moving contact and the static contact 140 in the contact mechanism, so that the circuit breaker 100 is in the corresponding closing state or opening state.

[0064] The yoke body, the arc guiding portion 1214, and the static iron core 1213 may be integrally formed by means of casting, stamping, bending, etc. The present application example does not specifically limit the integral forming method of the yoke assembly 121.

[0065] The yoke assembly 121 may be made of iron, electrolytic iron, iron-nickel alloy, or other metal materials with certain electromagnetic properties.

[0066] Based on the above, compared with the prior art, during the assembly process of the magnetic release mechanism, it is necessary to complete the mutual cooperation between the yoke, the arc guiding portion, and the static iron core. In the present application example, the yoke body, the arc guiding portion 1214, and the static iron core 1213 are integrally formed, which can save the assembly process of the yoke body, the arc guiding portion 1214, and the static iron core 1213, and thus improve the assembly efficiency of the magnetic release mechanism 120.

[0067] In addition, compared with the prior art, in the yoke, an installation hole is provided, the ejector rod is aligned with the installation hole and the ejector rod is passed through the installation hole. In the present application example, by providing a first installation groove 1215 on the first side plate 1211, during the assembly process of the ejector rod 124 and the yoke assembly 121, other structural parts in the magnetic release mechanism 120 except the yoke assembly 121 can be assembled outside the yoke assembly 121 to form an assembly. The ejector rod 124 in the assembly can directly enter the first installation groove 1215 from the notch of the first installation groove 1215. Since the first installation groove 1215 is provided on the first side plate 1211, and the first side plate 1211 is a part of the yoke assembly 121, and the ejector rod 124 is a part of the assembly, the cooperation between the ejector rod 124 and the first installation groove 1215 can realize the cooperation between the assembly and the yoke assembly 121. In the present application example, the cooperation between the first installation groove 1215 and the ejector rod 124 is easier to achieve, which can improve the assembly efficiency of the magnetic release mechanism 120.

[0068] In the present application example, by providing the yoke body, the arc guiding portion 1214, and the static iron core 1213 to be integrally formed to form the yoke assembly 121, and the material of the yoke assembly 121 can be iron, electrolytic iron, iron-nickel alloy, or other metal materials with certain electromagnetic properties. Compared with the prior art, the arc guiding portion is integrally formed with the static contact, and the arc guiding portion is made of a precious metal material (such as copper). In the present application example, the integrally formed yoke assembly 121 can reduce the use of precious metals, and thus reduce the manufacturing cost of the yoke assembly 121.

[0069] Based on the yoke assembly 121 provided in the above example, Figure 4 The following is a schematic structural diagram of a yoke assembly from a second perspective provided for the example of this application. Please refer to Figure 2 and Figure 4 , on the side of the first side plate 1211 facing away from the static iron core 1213, a receiving groove 1216 may be provided. The ejector rod 124 may include a stop portion 1241, and at least a part of the stop portion 1241 can extend into the receiving groove 1216.

[0070] The receiving groove 1216 may be circular, rectangular or other regular shapes. The receiving groove 1216 may be composed of multiple graphics, such as a graphic formed by the cooperation of a rectangle and a circle. The receiving groove 1216 may also be in an irregular shape. The shape of the receiving groove 1216 may be the same as the shape of the stop portion 1241, or the shape of the receiving groove 1216 may be different from the shape of the stop portion 1241. The specific shape of the receiving groove 1216 in the example of this application is not limited, as long as at least a part of the stop portion 1241 can extend into the receiving groove 1216.

[0071] The ejector rod 124 is inserted through the mounting groove, and the stop portion 1241 is provided on the side of the first side plate 1211 facing away from the static iron core 1213. Along the direction of the first side plate 1211 towards the second side plate 1212, the length of the stop portion 1241 may be the same as the depth of the receiving groove 1216, or the length of the stop portion 1241 may be different from the depth of the receiving groove 1216.

[0072] When the length of the stop portion 1241 is the same as the depth of the receiving groove 1216, the extension portion can extend into the receiving groove 1216, and the side of the extension portion facing away from the second side plate 1212 may be flush with the side of the first side plate 1211 facing away from the second side plate 1212, which can reduce the possibility of the ejector rod 124 accidentally touching other structures inside the circuit breaker 100, and can also improve the structural compactness of the components inside the circuit breaker 100, which is beneficial to the miniaturization development of the circuit breaker 100.

[0073] When the length of the stop portion 1241 is different from the depth of the receiving groove 1216, the length of the stop portion 1241 may be greater than the depth of the receiving groove 1216. At this time, after the ejector rod 124 is combined with the yoke assembly 121, at least a part of the stop portion 1241 extends out of the receiving groove 1216. The length of the stop portion 1241 may also be less than the depth of the receiving groove 1216. At this time, after the ejector rod 124 is combined with the yoke assembly 121, the stop portion 1241 can be completely located inside the receiving groove 1216.

[0074] Whether the length of the stopper portion 1241 is greater than the depth of the receiving groove 1216 or the length of the stopper portion 1241 is less than the depth of the receiving groove 1216, the function of the receiving groove 1216 is the same as that when the length of the stopper portion 1241 is equal to the depth of the receiving groove 1216, and the examples of the present application will not be elaborated herein.

[0075] Based on the above, the receiving groove 1216 can provide a receiving space for the stopper portion 1241, reduce the length of the side of the stopper portion 1241 facing away from the second side plate 1212 protruding from the side of the first side plate 1211 facing away from the second side plate 1212, reduce the possibility of the stopper portion 1241 accidentally contacting other structures inside the circuit breaker 100, and can also improve the structural compactness of the components inside the circuit breaker 100, which is beneficial to the miniaturization development of the circuit breaker 100.

[0076] Based on the yoke assembly 121 provided in the above example, please refer to Figure 3 , at least one first guiding structure 12151 is provided at the notch of the first installation groove 1215, and the inclination direction of the first guiding structure 12151 is adapted to the installation direction of the ejector rod 124 assembled into the first installation groove 1215.

[0077] The first guiding structure 12151 can be provided only on one groove wall of the first installation groove 1215, or can be provided on all groove walls of the first installation groove 1215 at the same time. The first guiding structure 12151 can be a chamfer structure or other structures that can facilitate the cooperation between the ejector rod 124 and the first installation groove 1215. The specific implementation manner of the first guiding structure 12151 is not limited in the examples of the present application.

[0078] When the first guiding structure 12151 is a chamfer structure, by setting the chamfer structure, the size at the notch of the first installation groove 1215 can be made larger, which is convenient for the ejector rod 124 to enter the first installation groove 1215 from the notch of the first installation groove 1215, and improves the cooperation efficiency between the ejector rod 124 and the yoke assembly 121.

[0079] Based on the above, by setting the first guiding structure 12151, the size at the notch of the first installation groove 1215 can be made larger. Based on this, during the cooperation process between the ejector rod 124 and the yoke assembly 121, the ejector rod 124 can extend into the side with a larger size of the first installation groove 1215, so that the time for the ejector rod 124 to enter the first installation groove 1215 from the notch of the first installation groove 1215 is shorter, improving the cooperation efficiency between the ejector rod 124 and the yoke assembly 121, and further improving the assembly efficiency of the magnetic tripping mechanism 120.

[0080] Based on the yoke assembly 121 provided in the above example, the groove wall of the first installation groove 1215 is provided with at least one first limiting structure (not shown in the figure), and the first limiting structure can be arranged on the side of the groove of the top rod 124 facing the first installation groove 1215.

[0081] The first limiting structure may be a limiting protrusion or other structure capable of limiting the push rod 124. The first limiting structure may be provided only on one groove wall of the first installation groove 1215, or may be provided on multiple groove walls of the first installation groove 1215 at the same time.

[0082] Based on the above, when the top rod 124 cooperates with the yoke assembly 121, the first limiting structure can be arranged on the side of the slot of the top rod 124 facing the first mounting slot 1215, so as to reduce the possibility of the top rod 124 detaching from the first mounting slot 1215 during the assembly process or use of the magnetic release mechanism 120, thereby ensuring the assembly reliability of the top rod 124 and the yoke assembly 121.

[0083] Based on the yoke assembly 121 provided in the above example, when the first limiting structure is a limiting protrusion, two first limiting structures may be spaced apart on one wall of the first mounting groove 1215. When the push rod 124 cooperates with the yoke assembly 121, part of the push rod 124 may be located between the two first limiting structures spaced apart, so as to reduce the possibility of the push rod 124 being separated from the first mounting groove 1215 during the assembly process or use of the magnetic release mechanism 120, and ensure the assembly reliability of the push rod 124 and the yoke assembly 121.

[0084] When the first limiting structure is a limiting protrusion, a second guiding structure may be provided in the direction of the first limiting structure toward the slot of the first mounting slot 1215. The second guiding structure may be a guiding surface. The inclination direction of the second guiding structure may be adapted to the assembly direction of the top rod 124, so that during the assembly process of the top rod 124 and the yoke assembly 121, when the top rod 124 encounters the first limiting structure, the cooperation between the top rod 124 and the second guiding structure can make it easier for the top rod 124 to reach the side of the slot of the first limiting member structure away from the first mounting slot 1215, thereby improving the assembly efficiency of the top rod 124 and the first mounting slot 1215, and further improving the assembly efficiency of the yoke mechanism.

[0085] In some possible implementations, the first limiting structure may also be a limiting groove, which may be provided on the groove wall of the first mounting groove 1215 . When the push rod 124 cooperates with the yoke assembly 121 , at least part of the push rod 124 may be located in the limiting groove.

[0086] Based on this, by limiting the position of the ejector rod 124 through the limiting groove, during the assembly process or use process of the magnetic release mechanism 120, the possibility of the ejector rod 124 disengaging from the first installation groove 1215 can be reduced, ensuring the assembly reliability of the ejector rod 124 and the yoke assembly 121.

[0087] Based on the yoke assembly 121 provided in the above example, the yoke assembly 121 is a stamping part.

[0088] Compared with setting the yoke assembly 121 as a bent structural part, it is easy to make the strength at the bent part of the structure weak. In the example of this application, the yoke assembly 121 is set as a stamping part. Based on the characteristics of the stamping process, the thickness of each part of the yoke assembly 121 can be the same, ensuring the reliability of use of the yoke assembly 121.

[0089] Next, the magnetic release mechanism 120 mentioned in the above example will be described in detail.

[0090] Exemplarily, the example of this application provides a magnetic release mechanism 120. Please refer to Figure 2 , the magnetic release mechanism 120 may include a moving iron core, a coil bobbin 122, an ejector rod 124, and a yoke assembly 121. The coil bobbin 122 is installed on the first side plate 1211 and the second side plate 1212. The first end of the coil bobbin 122 abuts against the first side plate 1211, and the second end of the coil bobbin 122 is connected to the second side plate 1212. The ejector rod 124 is movably connected to one end of the coil bobbin 122 facing the first side plate 1211, and the ejector rod 124 passes through the first installation groove 1215.

[0091] The first side plate 1211 and the second side plate 1212 may be part of the yoke body. The yoke body, the arc striking part 1214, the static iron core 1213, and other structures can cooperate to form the yoke assembly 121. For the specific structure of the yoke assembly 121, please refer to the relevant description above.

[0092] The first end of the coil bobbin 122 may abut against the side of the first side plate 1211 facing the second side plate 1212.

[0093] The second end of the coil bobbin 122 may abut against the side of the second side plate 1212 facing the first side plate 1211, or the second end of the coil bobbin 122 may cooperate with the second side plate 1212 through a connection structure. The example of this application does not limit this.

[0094] The magnetic release mechanism 120 may further include a coil 123. One end of the coil 123 can be fixedly connected to the wiring board 130 of the circuit breaker 100, and the other end of the coil 123 can be fixedly connected to the static contact 140 of the circuit breaker 100.

[0095] The ejector rod 124 and the moving iron core can be movably connected to the coil bobbin 122. The coil 123 can be sleeved on the coil bobbin 122. Based on this, the wiring board 130, the coil 123, the static iron core 1213, the coil bobbin 122, the ejector rod 124, and the moving iron core can cooperate to form an assembly, and then this assembly is integrated with the yoke assembly 121 as a whole.

[0096] In the example of this application, the wiring board 130, the coil 123, and the static contact 140 can be welded together outside the yoke assembly 121. Compared with the prior art where the welding of the wiring board to the yoke and the welding of the static contact to the yoke are completed inside the yoke, in the example of this application, the wiring board 130, the coil 123, and the static contact 140 are easier to weld, which can improve the welding efficiency of the yoke assembly 121.

[0097] The structure formed by the cooperation of the moving iron core, the ejector rod 124, and the coil bobbin 122 can be disassembled from the structure formed by the wiring board 130, the coil 123, and the static contact 140, and the wiring board 130, the coil 123, and the static contact 140 can also be disassembled from each other, which is convenient for the operator to maintain and repair the magnetic release mechanism 120.

[0098] Based on the above, compared with the prior art where an installation hole is provided in the yoke, the ejector rod is aligned with the installation hole and passed through the installation hole, in the example of this application, by providing the first installation groove 1215 on the first side plate 1211, during the assembly process of the ejector rod 124 and the yoke assembly 121, the moving iron core, the coil bobbin 122, the ejector rod 124, and other structural parts except the yoke assembly 121 in the magnetic release mechanism 120 can be assembled outside the yoke assembly 121 to form an assembly, and the ejector rod 124 in the assembly can directly enter the first installation groove 1215 from the notch of the first installation groove 1215. Since the first installation groove 1215 is provided on the first side plate 1211, and the first side plate 1211 is a part of the yoke assembly 121, and the ejector rod 124 is a part of the assembly, the cooperation between the ejector rod 124 and the first installation groove 1215 can realize the cooperation between the assembly and the yoke assembly 121. In the example of this application, the cooperation between the first installation groove 1215 and the ejector rod 124 is easier to achieve, which can improve the assembly efficiency of the magnetic release mechanism 120.

[0099] Based on the magnetic release mechanism 120 provided in the above example, please refer to Figure 2 And Figure 3 , the second side plate 1212 can be provided with a second installation groove 1217, the notch opening direction of the second installation groove 1217 is the same as the notch opening direction of the first installation groove 1215, and the second end of the coil bobbin 122 is matched with the groove wall of the second installation groove 1217.

[0100] The opening direction of the second installation groove 1217 may be the same as that of the first installation groove 1215, and the description thereof will not be expanded in this example of the present application.

[0101] Based on the above, the second end of the coil bobbin 122 is matched with the groove wall of the second installation groove 1217. Since the second installation groove 1217 is provided on the second side plate 1212, and the second side plate 1212 is a part of the yoke assembly 121, the cooperation between the coil bobbin 122 and the second installation groove 1217 can realize the cooperation between the coil bobbin 122 and the yoke assembly 121.

[0102] Since the first installation groove 1215 is provided on the first side plate 1211 and the second installation groove 1217 is provided on the second side plate 1212, and both the first side plate 1211 and the second side plate 1212 belong to the yoke assembly 121. Therefore, by setting the opening direction of the second installation groove 1217 to be the same as that of the first installation groove 1215, it is convenient to apply a force to the assembly formed by the moving iron core, the coil bobbin 122, the ejector rod 124 and other structural parts except the yoke assembly 121, so that the assembly enters the first installation groove 1215 from the opening of the first installation groove 1215 and enters the second installation groove 1217 from the opening of the second installation groove 1217 at the same time, which is convenient to complete the assembly of the assembly and the yoke assembly 121.

[0103] In addition, the second end of the coil bobbin 122 can penetrate through the second installation groove 1217, so that the end face of the second end of the coil bobbin 122 can be flush with the side of the second side plate 1212 away from the first side plate 1211, improving the space utilization rate inside the circuit breaker 100 and facilitating the miniaturization development of the circuit breaker 100.

[0104] Based on the magnetic release mechanism 120 provided in the above example, Figure 5 The following is a schematic structural diagram of a coil bobbin provided in the example of the present application. Please refer to Figure 2 and Figure 5 , the magnetic release mechanism 120 may further include a second limiting structure 1223, and the second limiting structure 1223 is provided on the coil bobbin 122. Alternatively, the second limiting structure 1223 is provided on the coil bobbin 122 and the yoke body.

[0105] The coil bobbin 122 may include a bobbin body 1221 and a baffle 1222, and the baffle 1222 may be connected to the side of the bobbin body 1221 away from the first side plate 1211. The second limiting structure 1223 may be provided on the bobbin body 1221, and the second limiting structure 1223 may also be provided on the baffle 1222.

[0106] The second limiting structure 1223 can be a limiting protrusion, and the second limiting structure 1223 can also include a limiting protrusion and a limiting groove. The specific implementation manner of the second limiting structure 1223 in this application example is not limited.

[0107] Next, the specific structure of the second limiting member structure will be described in detail.

[0108] When the second limiting structure 1223 is provided on the coil bobbin 122 and the yoke body, the second limiting structure 1223 can include a first limiting protrusion and a first limiting groove. The first limiting protrusion is provided on the coil bobbin 122, the first limiting groove is provided on the yoke body, and at least part of the first limiting protrusion is clamped into the first limiting groove.

[0109] The first limiting groove can be provided on one side of the second side plate 1212 facing the first side plate 1211, and the first limiting groove is communicated with the second limiting groove. The first limiting protrusion can be directly provided on the bobbin body 1221, or the first limiting protrusion can be provided on the baffle 1222. As long as it is ensured that during the cooperation process of the coil bobbin 122 and the yoke assembly 121, the first limiting protrusion can cooperate with the first limiting groove to limit the relative position of the coil bobbin 122 and the yoke body in the direction from the first side plate 1211 to the second side plate 1212.

[0110] When the limiting structure is provided on the coil bobbin 122, the second limiting structure 1223 is set as a second limiting protrusion, and the second limiting protrusion can be clamped to one side of the second side plate 1212 facing the first side plate 1211.

[0111] The second limiting protrusion can be directly provided on the coil 123 body, or the second limiting protrusion can be provided on one side of the baffle 1222 facing the first side plate 1211. As long as it is ensured that during the cooperation process of the coil bobbin 122 and the yoke assembly 121, the second limiting protrusion can cooperate with the second side plate 1212 to limit the relative position of the coil bobbin 122 and the yoke body in the direction from the first side plate 1211 to the second side plate 1212.

[0112] Based on the above example, on the basis that the first end of the coil bobbin 122 abuts against the first side plate 1211, through the cooperation of the second limiting structure 1223 and the yoke body, the coil bobbin 122 can be fixed between the first side plate 1211 and the second side plate 1212, improving the cooperation reliability of the coil bobbin 122 and the yoke assembly 121, and further improving the cooperation reliability of the magnetic detachment mechanism 120.

[0113] Finally, it should be noted that: the above embodiments are only specific implementation manners of this application, but the protection scope of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be covered within the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims

1. A yoke assembly, characterized in that, For a magnetic release mechanism, the yoke assembly comprises: The yoke body comprises a first side plate and a second side plate which are spaced apart from each other; An arc striking portion connected to the first side plate; A static iron core, arranged on a side of the first side plate facing the second side plate; Among them, the yoke body, the arc-starting part and the static iron core are integrally formed, the first side plate is provided with a first mounting groove, the first mounting groove passes through the first side plate and the static iron core, and the first mounting groove cooperates with the top rod of the magnetic release mechanism.

2. The yoke assembly according to claim 1, wherein A receiving groove is provided on a side of the first side plate facing away from the static iron core, and the push rod includes a stopper, and at least a part of the stopper can extend into the receiving groove.

3. The yoke assembly according to claim 1, wherein The notch of the first installation slot is provided with at least one first guide structure, and the inclination direction of the first guide structure is adapted to the installation direction of the ejector rod assembled to the first installation slot.

4. The yoke assembly according to claim 3, characterized in that, The groove wall of the first installation groove is provided with at least one first limiting structure, and the first limiting structure is arranged on a side of the push rod facing the groove opening of the first installation groove.

5. The yoke assembly according to any one of claims 1 to 4, characterized in that, The yoke assembly is a stamping part.

6. A magnetic detachment mechanism, characterized in that, It comprises a coil frame, a mandrel and a yoke assembly according to any one of claims 1 to 5; The coil frame is installed on the first side plate and the second side plate, the first end of the coil frame is abutted against the first side plate, and the second end of the coil frame is connected to the second side plate; The push rod is movably connected to one end of the coil frame facing the first side plate, and the push rod is inserted into the first installation groove.

7. The magnetic detachment mechanism according to claim 6, wherein The second side plate is provided with a second mounting groove, the groove opening direction of the second mounting groove is the same as the groove opening direction of the first mounting groove, and the second end of the coil skeleton is matched with the groove wall of the second mounting groove.

8. The magnetic separation mechanism according to claim 6, wherein, Also includes a second limiting structure, The second limiting structure is arranged on the coil frame; or, The second limiting structure is arranged on the coil frame and the yoke body.

9. The magnetic release mechanism according to claim 8, characterized in that: In the case where the second limiting structure is provided on the coil frame and the yoke body, the second limiting structure comprises a first limiting protrusion and a first limiting groove, the first limiting protrusion is provided on the coil frame, the first limiting groove is provided on the yoke body, and at least part of the first limiting protrusion is clamped to the first limiting groove; In the case where the limiting structure is provided on the coil frame, the second limiting structure is provided as a second limiting protrusion, and the second limiting protrusion can be snapped to a side of the second side plate facing the first side plate.

10. A circuit breaker, characterized in that, It comprises a shell, a contact mechanism and the magnetic release mechanism according to any one of claims 6 to 9, wherein the contact mechanism and the magnetic release mechanism are both installed in the shell.

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