Mutual inductor assembly and circuit breaker
By setting up multiple gaps in the transformer assembly, the problem of poor insulation effect of multiple conductors is solved, the detection accuracy is improved and the malfunction of the circuit breaker is reduced, and the stable fixation and insulation enhancement of the conductors are achieved.
Patent Information
- Application Number
- CN202421961764.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-13
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-08-13
AI Technical Summary
In the existing circuit breaker, multiple wires are arranged in the transformer, resulting in poor insulation effect, affecting detection accuracy, and easily leading to malfunction.
A transformer assembly is designed, including a transformer body and a partition assembly. The partition assembly sets multiple gaps in the transformer body to fix multiple wires separately, increase the insulation distance and provide a limiting effect, and prevent the wire from moving in a large range.
The insulation effect between multiple conductors is improved, the possibility of reducing the insulation distance caused by wire movement is reduced, the detection accuracy of the transformer is improved, and the possibility of malfunctioning of the circuit breaker is reduced.
Smart Images
Figure CN223155798U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of electrical equipment, and particularly relates to a current transformer assembly and a circuit breaker. Background Art
[0002] A circuit breaker is a common switching device. With the continuous development of Internet of Things technology and artificial intelligence technology, the intelligentization of circuit breakers has become a trend.
[0003] Existing circuit breakers generally include a contact structure, a current transformer, and a terminal. The current transformer is arranged between the contact structure and the terminal. A wire is threaded through the current transformer, and both ends of the wire are respectively connected to the contact structure and the terminal. The current transformer can detect the current flowing through the wire, so that the circuit breaker can operate according to the detection result of the current transformer.
[0004] However, the current transformer needs to detect the current flowing through multiple wires. The multiple wires are all threaded through the current transformer, resulting in poor insulation effect of the multiple wires, affecting the detection accuracy of the current transformer, and thus easily causing misoperation of the circuit breaker. Summary of the Utility Model
[0005] The present application provides a current transformer assembly and a circuit breaker, which can improve the insulation effect of multiple wires, improve the detection accuracy of the current transformer for the current in the wire, and reduce the possibility of misoperation of the circuit breaker.
[0006] In a first aspect, the present application provides a current transformer assembly, including a current transformer body and a partition assembly. An installation space penetrating the current transformer body is arranged in the middle of the current transformer body. The partition assembly is at least partially arranged in the installation space, and there are a plurality of mutually spaced gaps between the part of the partition assembly located in the installation space and the inner wall of the current transformer body. The gaps are used for threading wires, and different wires are threaded through the plurality of gaps.
[0007] Since the number of gaps between the partition assembly and the inner wall is multiple and the multiple gaps are spaced from each other, multiple wires can be respectively placed in the multiple gaps to achieve separate fixation of the multiple wires. Thus, the insulation distance between the multiple wires can be increased, the insulation effect between the multiple wires can be improved, and the influence of the arrangement of the wires on the detection accuracy of the current transformer can be reduced.
[0008] Moreover, the gaps also have a limiting effect on the wires. In the case where the circuit breaker shakes and causes the wires to move, the movement of the wires occurs in the gaps where they are located, which can reduce the possibility of the situation that the multiple wires come into contact due to the large-range movement of the wires, thereby reducing the insulation distance between the wires. That is, even if the wires move, the current transformer assembly proposed in the present application can isolate the multiple wires, improve the detection accuracy of the current transformer, and reduce the possibility of misoperation of the circuit breaker.
[0009] Optionally, the partition assembly includes a first partition and a second partition connected to each other, and the first partition and the second partition are stacked along the through-direction of the installation space. Part of the first partition abuts against the inner wall, and another part of the first partition has a plurality of mutually spaced first sub-gaps between the inner wall. Part of the second partition abuts against the inner wall, and another part of the second partition has a plurality of mutually spaced second sub-gaps between the inner wall.
[0010] The plurality of first sub-gaps correspond to the plurality of second sub-gaps one by one, and the first sub-gaps are connected to the corresponding second sub-gaps to form one gap.
[0011] In this way, the first partition and the second partition can both cooperate with the inner wall to form a gap for the wire to pass through. When the wire is set, the wire can pass through the corresponding first sub-gap and second sub-gap. The first sub-gap and the second sub-gap can both limit the wire, so that the partition assembly has a better fixing effect on the wire.
[0012] Optionally, one of the first partition plate and the second partition plate is provided with a clamping piece, and the other of the first partition plate and the second partition plate is provided with a clamping hole, and the clamping piece is clamped with the clamping hole.
[0013] In this way, the first partition plate and the second partition plate can be snap-fitted together through the cooperation between the snap-fitting piece and the snap-fitting hole.
[0014] Optionally, one of the first partition plate and the second partition plate that is provided with the clamping hole is provided with an avoidance hole, and the avoidance hole is located on a side away from the clamping member and is connected to the clamping hole.
[0015] In this way, when the user connects the first partition and the second partition, he can observe the connection between the connecting piece and the connecting hole through the avoidance hole, so as to adjust the position of the first partition and / or the second partition according to the observed situation and facilitate the connection.
[0016] Optionally, one of the first partition plate and the second partition plate provided with the clamping member is provided with a mounting groove, the mounting groove is located on the side facing the clamping hole, a mounting boss is provided at the bottom of the mounting groove, and the clamping member is connected to the mounting boss.
[0017] The installation boss can make the distance between the installation position of the clamping piece and the clamping hole closer. Therefore, when the clamping piece is set, a smaller clamping piece can be clamped with the clamping hole. The possibility of insufficient rigidity of the clamping piece when the size of the clamping piece is large can be reduced, so that the clamping of the clamping piece and the clamping hole is more stable.
[0018] Optionally, there are multiple clamping parts and multiple clamping holes, and the multiple clamping parts correspond to the multiple clamping holes one by one.
[0019] With the above settings, when connecting the first partition and the second partition, it can be achieved by the snap connection of multiple snap connectors and multiple snap holes. When multiple snap connectors are respectively snapped into multiple snap holes, there can be more snap connection positions between the first partition and the second partition, resulting in a better snap connection effect between the first partition and the second partition.
[0020] Optionally, the first sub-gap is aligned with the corresponding second sub-gap.
[0021] At this time, the first sub-gap is completely connected to the corresponding second sub-gap, forming a relatively large gap. At this time, a relatively large wire can be passed through the gap.
[0022] Optionally, the first sub-gap is misaligned with the corresponding second sub-gap.
[0023] At this time, the first sub-gap is partially connected to the corresponding second sub-gap, forming a relatively small gap. At this time, a relatively small wire can be passed through the gap.
[0024] Optionally, when there is a wire passing through the gap, one side of the part of the wire located in the gap abuts against the inner wall, and the other side abuts against the part of the partition assembly facing the inner wall.
[0025] In this way, in the present application, the inner wall and the partition assembly can further fix the wire in the gap, reduce the occurrence of the wire moving in the gap, and improve the fixing effect of the wire by the mutual inductor assembly.
[0026] In a second aspect, the present application provides a circuit breaker, including any one of the mutual inductor assemblies in the first aspect above.
[0027] For what is provided in the second aspect above and each possible design of the second aspect, the beneficial effects can refer to the beneficial effects brought by the first aspect and each possible implementation manner of the first aspect, which will not be elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Figure 1 It is a schematic diagram of a circuit breaker according to an embodiment of the present application.
[0029] Figure 2 It is one of the schematic diagrams of a mutual inductor assembly according to an embodiment of the present application.
[0030] Figure 3 It is a schematic diagram of a mutual inductor body according to an embodiment of the present application.
[0031] Figure 4 It is a front view of a mutual inductor assembly according to an embodiment of the present application.
[0032] Figure 5 is Figure 4 the sectional view taken along line A-A in
[0033] Figure 6 Exploded view of a partition assembly according to an embodiment of the present application.
[0034] Figure 7 Schematic diagram of a partition assembly according to an embodiment of the present application.
[0035] Figure 8 Cross-sectional view of a circuit breaker applying a partition assembly according to an embodiment of the present application.
[0036] Figure 9 Schematic diagram of another partition assembly according to an embodiment of the present application.
[0037] Figure 10 Cross-sectional view of another circuit breaker applying a partition assembly according to an embodiment of the present application.
[0038] Explanation of reference numerals:
[0039] 100: Circuit breaker; 101: Transformer assembly; 10: Transformer body; 11: Installation space; 20: Partition assembly; 30: Gap; 40: Conductor; 21: First partition; 211: First sub-gap; 22: Second partition; 221: Second sub-gap; 23: Clamping member; 24: Clamping hole; 25: Avoidance hole; 26: Installation groove; 27: Installation boss; 212: First groove; 222: Second groove. Detailed implementation manners
[0040] 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. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without making creative efforts shall fall within the protection scope of the present application.
[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled 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 embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the drawings are intended to cover non-exclusive inclusion.
[0042] References to "embodiments" in this disclosure mean that the particular features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of the present application. The phrase "embodiment" appearing in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.
[0043] As used herein, the term "and / or" is merely a description of the relationship between associated objects, indicating that there can be three relationships. For example, A and / or B can mean: the existence of A, the simultaneous existence of A and B, and the existence of B. Additionally, the character " / " herein generally indicates that the associated objects before and after are in an "or" relationship.
[0044] The directional terms used in the following description are the directions shown in the figures and do not limit the specific structure of the current-limiting module of the present application. For example, in the description of the present application, terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings. This 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 operate in a specific orientation. Therefore, it should not be construed as a limitation of the present application.
[0045] Furthermore, terms such as "first", "second", etc. in the description of the present application and the claims or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order, and may explicitly or implicitly include one or more of such features.
[0046] In the description of the present application, unless otherwise specified, "a plurality of" means two or more (including two). Similarly, "a plurality of groups" means two or more groups (including two groups).
[0047] 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. 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.
[0048] It should be understood that the "one embodiment" or "an embodiment" mentioned throughout the specification means that the specific features, structures, or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, the "in one embodiment" or "in an embodiment" that appears throughout the specification does not necessarily refer to the same embodiment. In addition, these specific features, structures, or characteristics can be combined in one or more embodiments in any suitable manner.
[0049] Exemplarily, as Figure 1 shown, an embodiment of the present application provides a circuit breaker 100, and the circuit breaker 100 includes a current transformer assembly 101 as Figure 2 shown.
[0050] In the circuit breaker 100 equipped with the above-mentioned current transformer assembly 101, the wire 40 can be fixed by the current transformer assembly 101. When setting the wire 40, the middle part of the wire 40 can be passed through the current transformer assembly 101, and both ends of the wire 40 can be connected to different components. Thus, the part of the wire 40 located in the current transformer assembly 101 can be fixed by the current transformer assembly 101 so that the current transformer assembly 101 can detect the current flowing through the wire 40.
[0051] The current transformer assembly 101 provided by the embodiment of the present application will be introduced in detail below with reference to the accompanying drawings.
[0052] Referring to Figures 1 to 3 shown, the present application provides a current transformer assembly 101, including a current transformer body 10 and a partition assembly 20. An installation space 11 penetrating the current transformer body 10 is provided in the middle of the current transformer body 10. The partition assembly 20 is at least partially disposed in the installation space 11, and there are a plurality of mutually spaced gaps 30 between the part of the partition assembly 20 located in the installation space 11 and the inner wall of the current transformer body 10. The gaps 30 are used for passing the wire 40, and the wires 40 passed through in the plurality of gaps 30 are different.
[0053] In an embodiment of the present application, the mutual inductor body 10 and the partition assembly 20 can cooperate to form a gap 30 for accommodating the wire 40. When setting the wire 40, the middle part of the wire 40 can be threaded through the gap 30, and both ends of the wire 40 can be electrically connected to other components.
[0054] Specifically, the partition assembly 20 can be at least partially arranged inside the installation space 11, so that the partition assembly 20 can cooperate with the mutual inductor body 10 to fix the wire 40 in the installation space 11.
[0055] Since there is a gap 30 between a part of the partition assembly 20 located in the installation space 11 and the inner wall, the wire 40 in the installation space 11 can be placed in the gap 30.
[0056] Since the number of gaps 30 between the partition assembly 20 and the inner wall is multiple, and the multiple gaps 30 are spaced apart from each other, multiple wires 40 can be respectively placed in the multiple gaps 30 to achieve the separate fixation of the multiple wires 40. Thus, the insulation distance between the multiple wires 40 can be increased, the insulation effect between the multiple wires 40 can be improved, and the influence of the setting of the wire 40 on the detection accuracy of the mutual inductor can be reduced.
[0057] Moreover, the gap 30 also has a limiting effect on the wire 40. When the circuit breaker 100 shakes and causes the wire 40 to move, the movement of the wire 40 occurs within the gap 30 where it is located. In this way, the possibility of the situation that due to the large-range movement of the wire 40, the multiple wires 40 come into contact and thus the insulation distance between the wires is reduced can be reduced. That is to say, even if the wire 40 moves, the mutual inductor assembly 101 proposed in the present application can isolate the multiple wires 40, improve the detection accuracy of the mutual inductor body 10, and reduce the possibility of misoperation of the circuit breaker 100.
[0058] Wherein, along the penetration direction of the installation space 11, the mutual inductor body 10 can have an opposite first side and a second side. A part of the partition assembly 20 can extend from the first side, and / or a part of the partition assembly 20 can extend from the second side. Or, the partition assembly 20 can also be entirely located inside the installation space 11. The specific setting manner of the partition assembly 20 at the mutual inductor body 10 is not specifically limited in the embodiment of the present application.
[0059] It should be noted that in the embodiment of the present application, the circuit breaker 100 can be a residual current operated circuit breaker. A residual current operated circuit breaker is a leakage protection electrical appliance that can detect the ground fault current in the circuit, can effectively reduce the occurrence of leakage fires, and protect the safety of users.
[0060] The residual current operated circuit breaker can be a three-pole circuit breaker or a four-pole circuit breaker. In the three-pole circuit breaker, the wire 40 can include three-phase wires, namely the phase A wire, the phase B wire, and the phase C wire. At this time, the current transformer body 10 needs to detect the currents in the phase A wire, the phase B wire, and the phase C wire. There can be three gaps 30 between the partition assembly 20 and the current transformer body 10, which are respectively used for passing through the three-phase wires to isolate the three-phase wires from each other.
[0061] In the four-pole circuit breaker, the wire 40 can include four-phase wires, namely the phase A wire, the phase B wire, the phase C wire, and the phase N wire. At this time, the current transformer body 10 needs to detect the currents in the phase A wire, the phase B wire, the phase C wire, and the phase N wire. There can be four gaps 30 between the partition assembly 20 and the current transformer body 10, which are respectively used for passing through the four-phase wires to isolate the four-phase wires from each other.
[0062] It should also be noted that the multiple gaps 30 can be evenly arranged along the circumference of the inner wall. Specifically, the current transformer body 10 is generally annular, so the shape of the inner wall is circular. In the case where the residual current operated circuit breaker is a three-pole circuit breaker, the three gaps 30 can be distributed along the circumference of the circle, and the angle between every two adjacent gaps 30 is 120°. In the case where the residual current operated circuit breaker is a four-pole circuit breaker, the four gaps 30 can be distributed along the circumference of the circle, and the angle between every two adjacent gaps 30 is 90°.
[0063] In the above arrangement where the multiple gaps 30 are evenly distributed, the distance between the multiple gaps 30 is relatively large, which can make the insulation distance between the multiple wires 40 relatively large, and can reduce the possibility of the problem of mutual influence between the currents in different wires 40 during the detection process of the currents flowing through the multiple wires 40 by the current transformer body 10, which is convenient for improving the detection accuracy of the currents in the multiple wires 40 by the current transformer body 10.
[0064] Of course, the multiple gaps 30 can also be distributed in other ways. For example, the inner wall can include two semi-circular wall surfaces, and the multiple gaps 30 can all be distributed on one of the wall surfaces, and no gap 30 needs to be provided on the other wall surface. The specific number and distribution method of the gaps 30 in the current transformer assembly 101 are not specifically limited in the embodiments of the present application and can be set according to actual situations.
[0065] In some embodiments, such as Figure 4 、 Figure 5 and Figure 6As shown, the partition assembly 20 may include a first partition 21 and a second partition 22 that are connected to each other. The first partition 21 and the second partition 22 are stacked along the penetration direction of the installation space 11. Part of the first partition 21 abuts against the inner wall, and there are a plurality of mutually spaced first sub-gaps 211 between the other part of the first partition 21 and the inner wall. Part of the second partition 22 abuts against the inner wall, and there are a plurality of mutually spaced second sub-gaps 221 between the other part of the second partition 22 and the inner wall.
[0066] The plurality of first sub-gaps 211 correspond to the plurality of second sub-gaps 221 one by one, and the first sub-gap 211 and the corresponding second sub-gap 221 communicate to form a gap 30.
[0067] In the present application, the first partition 21 and the second partition 22 are stacked along the penetration direction of the installation space 11. The first partition 21 and the second partition 22 can both cooperate with the inner wall to form a gap 30 for threading the wire 40. When setting the wire 40, the wire 40 can pass through the corresponding first sub-gap 211 and second sub-gap 221. At this time, the first sub-gap 211 and the second sub-gap 221 can both limit the wire 40, so that the fixing effect of the partition assembly 20 on the wire 40 is better.
[0068] Specifically, part of the first partition 21 can abut against the inner wall, and the other part can form a first sub-gap 211 with the inner wall. Part of the second partition 22 can abut against the inner wall, and the other part can form a second sub-gap 221 with the inner wall. Therefore, the first partition 21 and the second partition 22 can respectively cooperate with the inner wall to form a space for the wire 40 to pass through.
[0069] Since the number of both the first sub-gaps 211 and the second sub-gaps 221 is multiple, and the corresponding first sub-gaps 211 and second sub-gaps 221 communicate, each first sub-gap 211 has a second sub-gap 221 communicating with it. The communicating first sub-gap 211 and second sub-gap 221 can be used as a gap 30 to thread the same wire 40.
[0070] It should be noted that in this embodiment, both the first partition 21 and the second partition 22 are installed in the installation space 11 in a manner of abutting against the inner wall. Combining Figure 1 , Figure 1 shows the specific installation position of the current transformer assembly 101 in the circuit breaker 100. It can be seen that the circuit breaker 100 has a receiving gap for placing the current transformer assembly 101. The current transformer body 10 and the partition assembly 20 are arranged in the receiving gap. The receiving gap can limit the current transformer body 10 and the partition assembly 20, and can reduce the possibility of the partition assembly 20 falling out of the installation space 11.
[0071] Of course, in order to further prevent the first partition 21 and the second partition 22 from falling out of the installation space 11, the first partition 21 or the second partition 22 can also be connected to the inner wall by bonding or welding.
[0072] It should also be noted that in the embodiment of the present application, the first partition 21 can be disposed near the first side, and the second partition 22 can be disposed near the second side. At this time, a part of the first partition 21 can protrude from the first side, and / or a part of the second partition 22 can protrude from the second side. Or, both the first partition 21 and the second partition 22 can also be located inside the installation space 11.
[0073] In the embodiment of the present application, the first partition 21 and the second partition 22 can be connected in different ways so that the first partition 21 and the second partition 22 are relatively fixed, thereby reducing the possibility of the problem that the fixing effect of the gap 30 on the wire 40 is poor when the first partition 21 moves relative to the second partition 22.
[0074] For example, the first partition 21 and the second partition 22 can be fixedly connected by bonding or welding. Or, the first partition 21 and the second partition 22 can also be detachably connected by screwing or clamping. The specific connection method of the first partition 21 and the second partition 22 is not specifically limited in the embodiment of the present application.
[0075] Next, the following description will be made with the first partition 21 and the second partition 22 being connected by clamping:
[0076] As Figure 6 、 Figure 7 shown, one of the first partition 21 and the second partition 22 can be provided with a clamping member 23, and the other of the first partition 21 and the second partition 22 can be provided with a clamping hole 24, and the clamping member 23 is clamped with the clamping hole 24.
[0077] In this way, the first partition 21 and the second partition 22 can be clamped by the cooperation of the clamping member 23 and the clamping hole 24.
[0078] Specifically, the first partition 21 can be provided with a clamping member 23, and the second partition 22 can be provided with a clamping hole 24, and the clamping member 23 and the clamping hole 24 are arranged opposite to each other. When connecting the first partition 21 and the second partition 22, the clamping member 23 on the first partition 21 can be inserted into the clamping hole 24 on the second partition 22 to achieve the clamping of the first partition 21 and the second partition 22.
[0079] Alternatively, the second partition plate 22 may be provided with a clamping member 23, and the first partition plate 21 may be provided with a clamping hole 24, and the clamping member 23 is arranged opposite to the clamping hole 24. When connecting the first partition plate 21 and the second partition plate 22, the clamping member 23 on the second partition plate 22 may be aligned with the clamping hole 24 on the first partition plate 21 and inserted to achieve the clamping connection between the second partition plate 22 and the first partition plate 21.
[0080] It should be noted that, in order to allow the clamping member 23 to be inserted into the clamping hole 24 and to be removed from the clamping hole 24 when the partition assembly 20 needs to be removed, the clamping member 23 may be elastic.
[0081] In some embodiments, Figure 6 as well as Figure 7 As shown, one of the first partition plate 21 and the second partition plate 22 provided with the clamping hole 24 may be provided with an avoidance hole 25 , and the avoidance hole 25 is located at a side away from the clamping member 23 and communicated with the clamping hole 24 .
[0082] The avoidance hole 25 is located on the side away from the clamping member 23. Since the clamping hole 24 is opposite to the clamping member 23, the avoidance hole 25 and the clamping hole 24 are located on opposite sides. Since the avoidance hole 25 is connected to the clamping hole 24, the position where the clamping hole 24 is provided in the first partition 21 and the second partition 22 can be exposed through the avoidance hole 25.
[0083] In this way, when the user is clamping the first partition 21 and the second partition 22, he can observe the clamping condition of the clamping member 23 and the clamping hole 24 through the avoidance hole 25. The user can adjust the position of the first partition 21 and / or the second partition 22 according to the observation condition, so as to facilitate the clamping.
[0084] In addition, the setting of the avoidance hole 25 can also make one of the first partition plate 21 and the second partition plate 22 where the snap-in hole 24 is set to have a hollow structure, which can reduce the weight of the partition plate assembly 20 and facilitate molding.
[0085] Specifically, the shape of the avoidance hole 25 can be set according to the shape of one of the first partition plate 21 and the second partition plate 22 in which the clamping hole 24 is set. In this way, the avoidance hole 25 can be larger, so that the weight reduction effect of the avoidance hole 25 is better. Of course, the installation groove 26 can be of other shapes.
[0086] At this time, the clamping hole 24 can be set at the bottom of the avoidance hole 25 and penetrate the bottom of the avoidance hole 25, such as Figure 6 shown.
[0087] In some embodiments, Figure 6 , Figure 7As shown, one of the first partition 21 and the second partition 22 where the clamping member 23 is provided may be provided with an installation groove 26. The installation groove 26 is located on the side facing the clamping hole 24. An installation boss 27 is provided at the bottom of the installation groove 26, and the clamping member 23 is connected to the installation boss 27.
[0088] The installation groove 26 is located on the side facing the clamping hole 24. Since the clamping member 23 is opposite to the clamping hole 24, the installation groove 26 and the clamping member 23 may be located on the same side. An installation boss 27 is provided at the bottom of the installation groove 26, and the installation boss 27 can provide a setting position for the clamping member 23.
[0089] The clamping member 23 can be connected to the installation boss 27. The setting of the installation boss 27 can make the distance between the setting position of the clamping member 23 and the clamping hole 24 relatively close.
[0090] Thus, when setting the clamping member 23, a clamping member 23 with a smaller size can be used to engage with the clamping hole 24. It is possible to avoid the situation where the distance between the setting position of the clamping member 23 and the clamping hole 24 is large, resulting in a large size of the clamping member 23. Furthermore, it is possible to reduce the possibility of the problem of insufficient stiffness when the size of the clamping member 23 is large, making the engagement between the clamping member 23 and the clamping hole 24 more stable.
[0091] Among them, the size of the clamping member 23 refers to the distance between the opposite ends of the clamping member 23 in the direction from the first partition 21 to the second partition 22.
[0092] In addition, the setting of the installation groove 26 can also make one of the first partition 21 and the second partition 22 where the clamping member 23 is provided have a hollowed-out part inside, which can reduce the weight of the partition assembly 20 and facilitate molding.
[0093] In the embodiment of the present application, a weight-reducing hole may also be provided on the side of the installation boss 27 facing the clamping hole 24, and the clamping member 23 may be provided at a position where the installation boss 27 does not have a weight-reducing hole.
[0094] It should be noted that the shape of the installation groove 26 can be set according to the shape of one of the first partition 21 and the second partition 22 where the clamping member 23 is provided. In this way, the installation groove 26 can be larger, so that the weight-reducing effect of the installation groove 26 is better. Of course, the installation groove 26 can be of other shapes.
[0095] In addition, the installation boss 27 can also be of different shapes. For example, it can be cylindrical, cuboid-shaped, etc. The specific shape of the installation boss 27 is not specifically limited in the embodiment of the present application.
[0096] In some embodiments, such as Figure 6As shown, the number of snap connectors 23 and snap holes 24 is multiple, and the multiple snap connectors 23 correspond to the multiple snap holes 24 one by one.
[0097] With the above arrangement, when connecting the first partition 21 and the second partition 22, it can be achieved by the snap connection of the multiple snap connectors 23 and the multiple snap holes 24. The multiple snap connectors 23 are respectively snapped into the multiple snap holes 24, which can result in more snap connection positions between the first partition 21 and the second partition 22, and thus better snap connection effect between the first partition 21 and the second partition 22.
[0098] It should be noted that the number of the snap connectors 23 and the snap holes 24 can both be 2, 3, 4, 5, etc. Of course, the number of the snap connectors 23 and the snap holes 24 can also both be 1. The specific number of the snap connectors 23 and the snap holes 24 is not specifically limited in the embodiments of the present application.
[0099] When the mounting boss 27 is cylindrical, the multiple snap connectors 23 can be distributed along the circumferential direction of the mounting boss 27, or can also be distributed along the radial direction of the mounting boss 27, etc. The specific arrangement of the snap connectors 23 is not specifically limited in the embodiments of the present application. The snap holes 24 can be correspondingly arranged according to the arrangement of the snap connectors 23.
[0100] For the case where the mounting boss 27 is of other shapes, reference can be made to the above description, and the embodiments of the present application will not elaborate here.
[0101] In addition to the above arrangement where the snap holes 24 and the snap connectors 23 correspond to each other one by one, the snap holes 24 and the snap connectors 23 can also have other arrangements, which will be specifically described in the following embodiments.
[0102] As Figure 6 shown, the number of the snap holes 24 can be multiple, and the snap connectors 23 can be snapped with different snap holes 24 to change the communication range between the first sub-gap 211 and the second sub-gap 221, so as to adjust the size of the gap 30.
[0103] In the embodiments of the present application, the number of the snap holes 24 is greater than the number of the snap connectors 23, and the multiple snap holes 24 can provide different snap positions for the snap connectors 23. When connecting the first partition 21 and the second partition 22, the snap connectors 23 are snapped with some of the multiple snap holes 24.
[0104] When the snap connectors 23 are snapped with different snap holes 24, the relative positions of the first partition 21 and the second partition 22 can be changed, so that the communication range between the first sub-gap 211 and the second sub-gap 221 is changed. Thus, the size of the gap 30 formed by the first sub-gap 211 and the corresponding second sub-gap 221 can be changed accordingly.
[0105] During the process of adjusting the size of the gap 30, the first sub-gap 211 and the corresponding second sub-gap 221 can be aligned. At this time, the first sub-gap 211 and the corresponding second sub-gap 221 are completely connected, and the formed gap 30 is relatively large, as Figure 7 and Figure 8 shown. At this time, a relatively thick wire 40 can be passed through the gap 30.
[0106] Of course, the first sub-gap 211 and the corresponding second sub-gap 221 can also be misaligned. At this time, the first sub-gap 211 and the corresponding second sub-gap 221 are partially connected, and the formed gap 30 is relatively small, as Figure 9 and Figure 10 shown. At this time, a relatively thin wire 40 can be passed through the gap 30.
[0107] When the first sub-gap 211 and the corresponding second sub-gap 221 are misaligned, the first partition 21 will block part of the second sub-gap 221, and / or the second partition 22 will block part of the first sub-gap 211. The unblocked parts in the first sub-gap 211 and the second sub-gap 221 can be connected to form a gap 30 through which the wire 40 can be passed.
[0108] In this application, when connecting the first partition 21 and the second partition 22, a suitable clamping position can be selected according to the thickness of the wire 40. So that the wire 40 and the gap 30 for placing the wire 40 can be adapted, and the fixing effect of the current transformer assembly 101 on the wire 40 can be improved.
[0109] That is to say, the current transformer assembly 101 proposed in this application can effectively fix wires 40 of different thicknesses. It is possible to reduce the problem that when the gap 30 is too large, the moving range of the wire 40 in the gap 30 is also large, resulting in poor insulation effects of multiple wires 40. And it is also possible to reduce the problem that when the gap 30 is too small, the wire 40 cannot be fixed.
[0110] It should be noted that in the embodiments of this application, the number of the clamping members 23 can also be 1 or more.
[0111] For the convenience of description, a plurality of clamping members 23 are referred to as a group of clamping members 23. A plurality of clamping holes 24 that can be clamped with a group of clamping members 23 and can make the relative positions of the first partition 21 and the second partition 22 certain are referred to as a group of clamping holes 24. A group of clamping members 23 can be clamped with different groups of clamping holes 24 to adjust the size of the gap 30.
[0112] Among them, there can be multiple engaging members 23 in a set of engaging members 23, and there can also be multiple engaging holes 24 in a set of engaging holes 24. Moreover, the number of engaging holes in a set of engaging holes 24 is the same as the number of engaging members 23 in a set of engaging members 23. For example, the number of engaging members 23 in a set of engaging members 23 can be 2, and the number of engaging holes 24 in a set of engaging holes 24 can also be 2. Or, the number of engaging members 23 in a set of engaging members 23 can be 3, and the number of engaging holes 24 in a set of engaging holes 24 can also be 3, and so on.
[0113] In this way, when the first partition 21 is engaged with the second partition 22, a set of engaging members 23 can be engaged with a set of engaging holes 24. And there are many engaging positions between a set of engaging members 23 and a set of engaging holes 24, which can make the engaging effect better.
[0114] It should also be noted that in order to make the adjustable range of the size of the gap 30 larger, the number of groups of engaging holes 24 can also be larger. For example, 2 groups of engaging holes 24 can be set. At this time, the engaging member 23 can choose any one of the groups of engaging holes 24 to engage, and engaging the engaging member 23 with different groups of engaging holes 24 can obtain two sets of gaps 30 with different sizes. Or, 3 groups of engaging holes 24 can be set. At this time, the engaging member 23 can choose any one of the groups of engaging holes 24 to engage, and engaging the engaging member 23 with different groups of engaging holes 24 can obtain 3 sets of gaps 30 with different sizes.
[0115] Of course, the number of groups of engaging holes 24 can also be other values, such as 4, 5 or 6, etc. The specific value of the number of groups of engaging holes 24 is not specifically limited in the embodiments of the present application.
[0116] In the embodiments of the present application, as Figure 4 , Figure 5 and Figure 7 shown, a first groove 212 is provided on the side of the first partition 21 facing the transformer body 10, and a first sub-gap 211 can be formed between the first groove 212 and the inner wall. The part of the first partition 21 without the first groove 212 abuts against the inner wall.
[0117] Continuing to refer to Figure 4 , Figure 5 and Figure 7 , a second groove 222 is provided on the side of the second partition 22 facing the transformer body 10, and a second sub-gap 221 can be formed between the second groove 222 and the inner wall. The part of the second partition 22 without the second groove 222 abuts against the inner wall.
[0118] In the present application, the shapes and sizes of the first groove 212 and the second groove 222 can be the same, as Figure 4 and Figure 7As shown. Thus, when the first sub-gap 211 faces the second sub-gap 221, the size of the gap 30 is the same as the size of the first groove 212, or rather, the size of the gap 30 is the same as the size of the second groove 222. In this way, when threading the wire 40, the utilization rate of the first groove 212 and the second groove 222 is relatively high.
[0119] Of course, the shapes and sizes of the first groove 212 and the second groove 222 may also be inconsistent. For example, the size of the first groove 212 may be larger than the size of the second groove 222. At this time, when the first sub-gap 211 faces the second sub-gap 221, the size of the gap 30 is the same as the size of the second groove 222. The part of the first groove 212 that is larger than the second groove 222 will be blocked by the second partition 22, which will cause part of the first groove 212 to be unused.
[0120] Similarly, in the case where the shapes of the first groove 212 and the second groove 222 are different, the first groove 212 and / or the second groove 222 may be blocked, resulting in a lower utilization rate of the first groove 212 and / or the second groove 222.
[0121] In the implementation of the present application, when a wire 40 is threaded in the gap 30, one side of the part of the wire 40 located in the gap 30 abuts against the inner wall, and the other side abuts against the part of the partition assembly 20 facing the inner wall.
[0122] Through the above settings, the inner wall and the partition assembly 20 can further fix the wire 40 in the gap 30, reduce the occurrence of the wire 40 moving in the gap 30, and improve the fixing effect of the transformer assembly 101 on the wire 40.
[0123] In this way, the wire 40 is in a fixed state in the transformer assembly 101. It can make the magnetic field inside the circuit breaker 100 relatively stable, improve the instantaneous test stability of the circuit breaker 100, and also make the detection of the current flowing through the wire 40 by the transformer body 10 more accurate.
[0124] When the partition assembly 20 includes the first partition 21 and the second partition 22, the part of the wire 40 located in the gap 30 can abut against the inner wall, the part of the first partition 21 facing the inner wall, and the part of the second partition 22 facing the inner wall. Thus, the inner wall, the first partition 21, and the second partition 22 can jointly fix the wire 40.
[0125] In the embodiment of the present application, the transformer body 10 and the partition assembly 20 can cooperate to form a gap 30 for accommodating a plurality of wires 40. Since the plurality of gaps 30 are spaced apart from each other, the plurality of wires 40 can be respectively placed in the plurality of gaps 30 to achieve separate fixation of the plurality of wires 40. Thereby, the insulation distance between the plurality of wires 40 can be increased, the insulation effect between the plurality of wires 40 can be improved, and the influence of the arrangement of the wires 40 on the detection accuracy of the transformer can be reduced.
[0126] Moreover, the gap 30 also has a limiting effect on the wire 40. When the circuit breaker 100 shakes and causes the wire 40 to move, the wire 40 can move in the gap 30, which can reduce the possibility that due to a large range of movement of the wire 40, the plurality of wires 40 come into contact and thus the insulation distance between the wires is reduced. That is to say, even if the wire 40 moves, the transformer assembly 101 proposed in the present application can isolate the plurality of wires 40, improve the detection accuracy of the transformer, and reduce the possibility of misoperation of the circuit breaker 100.
[0127] Finally, it should be noted that the above embodiments are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present application should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.
Claims
1. A mutual inductor assembly, characterized in that, include: A transformer body, wherein a mounting space penetrating the transformer body is provided in the middle; The partition assembly is at least partially arranged in the installation space, and a plurality of mutually spaced gaps are provided between the part of the partition assembly located in the installation space and the inner wall of the transformer body, wherein the gaps are used for passing wires, and the wires passed through the plurality of gaps are different.
2. The current transformer assembly according to claim 1, wherein, The partition assembly comprises a first partition and a second partition connected to each other, wherein the first partition and the second partition are stacked along a penetrating direction of the installation space; Part of the first partitions abuts against the inner wall, and another part of the first partitions has a plurality of mutually spaced first sub-gaps between the first partitions and the inner wall; Part of the second partitions abuts against the inner wall, and another part of the second partitions has a plurality of second sub-gaps spaced from each other between the second partitions and the inner wall; A plurality of the first sub-gaps correspond one-to-one to a plurality of the second sub-gaps, and the first sub-gaps are connected to the corresponding second sub-gaps to form one gap.
3. The current transformer assembly according to claim 2, characterized in that, One of the first partition plate and the second partition plate is provided with a clamping piece, and the other of the first partition plate and the second partition plate is provided with a clamping hole, and the clamping piece is clamped with the clamping hole.
4. The current transformer assembly according to claim 3, characterized in that, One of the first partition plate and the second partition plate provided with the clamping hole is provided with an avoidance hole, and the avoidance hole is located at a side away from the clamping member and is communicated with the clamping hole.
5. The current transformer assembly according to claim 3, wherein One of the first partition plate and the second partition plate on which the clamping member is provided is provided with a mounting groove, the mounting groove is located on the side facing the clamping hole, a mounting boss is provided at the bottom of the mounting groove, and the clamping member is connected to the mounting boss.
6. The current transformer assembly according to claim 3, characterized in that, There are multiple clamping parts and multiple clamping holes, and the multiple clamping parts correspond to the multiple clamping holes one by one.
7. The current transformer assembly according to claim 2, wherein, The first sub-gap is directly opposite to the corresponding second sub-gap.
8. The current transformer assembly according to claim 2, characterized in that, The first sub-gap is offset from the corresponding second sub-gap.
9. The current transformer assembly according to claim 1, wherein When the conductive wire is passed through the gap, one side of the conductive wire located in the gap abuts against the inner wall, and the other side abuts against the portion of the partition assembly facing the inner wall.
10. A circuit breaker, characterized in that, The invention comprises the mutual inductor assembly according to any one of claims 1 to 9.