A mistaken insertion prevention structure

Abstract

The embodiment of the utility model provides a kind of anti-misplug structure, it is related to low voltage electrical apparatus technical field.The utility model provides an anti-misplug structure including circuit breaker body and base, circuit breaker body is provided with first limiting structure, base has the containing area for containing circuit breaker body, containing area is provided with second limiting structure, second limiting structure is used to cooperate with first limiting structure in the case where circuit breaker body cooperates with containing area, to position circuit breaker body.The utility model provides an anti-misplug structure, so that circuit breaker body misplug cannot be inserted in place, to prevent circuit breaker body from misplug on base and lead to functional failure, improve the use safety of circuit breaker.

Description

Technical Field

[0001] This utility model relates to the field of low-voltage electrical technology, and more specifically, to a structure for preventing misinsertion. Background Technology

[0002] A circuit breaker is a switching device capable of closing, carrying, and opening current under normal circuit conditions, and capable of closing, carrying, and opening current under abnormal circuit conditions within a specified time. When faults such as leakage, overload, or short circuit occur in a power system, it can quickly disconnect the faulty component in the power system or cut off the entire power supply to prevent the fault from escalating and avoid significant economic losses and casualties.

[0003] A circuit breaker typically includes a base and a circuit breaker body that can be detachably plugged into the base. When the circuit breaker body is plugged into the multi-pole base, there may be a risk of mis-plugging, which may lead to the risk of equipment burnout due to phase loss and / or zero loss, as well as functional failure due to mis-plugging. Utility Model Content

[0004] The purpose of this utility model is to provide an anti-misinsertion structure, which can prevent the circuit breaker body from being misinserted on the base, thus preventing functional failure and improving the safety of the circuit breaker.

[0005] The embodiments of this utility model can be implemented as follows:

[0006] In a first aspect, this utility model provides a structure to prevent misinsertion, comprising:

[0007] The circuit breaker body is provided with a first limiting structure;

[0008] The base has a receiving area for accommodating the circuit breaker body, and a second limiting structure is provided on the groove wall of the receiving area;

[0009] The second limiting structure is used to cooperate with the first limiting structure to position the circuit breaker body when the circuit breaker body is engaged with the receiving area.

[0010] Furthermore, both the circuit breaker body and the base are provided with mutually cooperating signal terminals.

[0011] In an optional embodiment, the first limiting structure includes a groove formed in the circuit breaker body, and the second limiting structure includes a protrusion protruding from the receiving area; or,

[0012] The first limiting structure includes a protrusion protruding from the circuit breaker body, and the second limiting structure includes a groove formed in the receiving area;

[0013] When the circuit breaker body mates with the receiving area, the protrusion mates with the groove.

[0014] In an optional embodiment, the first limiting structure includes a groove formed in the circuit breaker body, and the second limiting structure includes a protrusion protruding from the groove wall of the receiving area; wherein, one pole of the circuit breaker body is provided with the signal terminal, the other poles of the circuit breaker body are provided with the groove, and the receiving area is provided with a protrusion that mates with the groove.

[0015] In an optional implementation, the adjacent bumps are staggered.

[0016] In an optional implementation, at least one of the cross-sectional shape and cross-sectional size of the plurality of protrusions is different.

[0017] In an optional embodiment, the first limiting structure includes a protrusion protruding from the circuit breaker body, and the second limiting structure includes a groove formed in the receiving area.

[0018] The circuit breaker body has a protrusion and a signal terminal on one of its poles, and the receiving area has a groove that matches the protrusion.

[0019] In an optional embodiment, both the first limiting structure and the signal terminal are disposed on the side of the circuit breaker body near the base.

[0020] In an optional embodiment, the anti-misinsertion structure further includes a latch, which is rotatably disposed within the circuit breaker body. The circuit breaker body has a movable operating mechanism, and the base has a receiving groove. One end of the latch cooperates with the operating mechanism, and the other end of the latch can be rotated to the outside of the circuit breaker body and latched into the receiving groove.

[0021] When the latch abuts against the base, the latch obstructs the movement of the operating mechanism, thereby preventing the circuit breaker body from closing; and is used to release the restriction on the operating mechanism when the latch is engaged in the receiving groove.

[0022] In an optional embodiment, the buckle includes a holding part and a linkage part connected at a preset angle. One end of the holding part is provided with an abutment block. The buckle can rotate until the abutment block extends outside the circuit breaker body. The linkage part cooperates with the operating mechanism. The receiving groove is adapted to the abutment block.

[0023] In an optional embodiment, the first limiting structure includes a protrusion protruding from the groove wall of the receiving area, and the second limiting structure includes a groove formed in the circuit breaker body.

[0024] The circuit breaker body includes a base and a top cover that are interlocked with each other. A first protruding plate is provided on the base, and a second protruding plate is provided on the top cover.

[0025] When the base is fastened to the top cover, the first protruding plate and the second protruding plate fasten together to form the groove.

[0026] The beneficial effects of the anti-misinsertion structure provided in this embodiment of the utility model include:

[0027] By setting a first limiting structure on the circuit breaker body and a second limiting structure on the receiving area of ​​the base, the second limiting structure, in conjunction with the first limiting structure, positions the circuit breaker body when it is fitted and engaged with the receiving area. Furthermore, the mutually engaging signal terminals on the circuit breaker body and the base also serve to position the circuit breaker body. Thus, the cooperating limiting structures and signal terminals guide the circuit breaker body to the corresponding position within the receiving area, preventing mis-insertion of the circuit breaker body on the base, which could lead to phase loss and / or zero loss. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the anti-misinsertion structure provided in an embodiment of the present utility model from a first-view perspective;

[0030] Figure 2 This is a schematic diagram of the structure of the circuit breaker body provided in some optional embodiments of the present invention;

[0031] Figure 3 This is a schematic diagram of the structure of the circuit breaker body provided in some alternative embodiments of the present invention;

[0032] Figure 4 This is a schematic diagram of the structure of the base provided in some optional embodiments of the present invention;

[0033] Figure 5 This is a schematic diagram of the structure of the base provided in some alternative embodiments of the present invention;

[0034] Figure 6 A schematic diagram of the base structure for demonstrating the position of the second limiting structure, provided for some alternative embodiments of this utility model;

[0035] Figure 7 This is a schematic diagram of the structure of the circuit breaker body provided in some other optional embodiments of the present invention;

[0036] Figure 8 This is a schematic diagram of the structure of the base provided in some other optional embodiments of the present invention;

[0037] Figure 9 This is a cross-sectional view in some optional embodiments of the present invention used to show the latching state when the circuit breaker body is misinserted;

[0038] Figure 10 This is a schematic diagram illustrating the latching state of the circuit breaker body during normal insertion in some optional embodiments of this utility model;

[0039] Figure 11 This is a schematic diagram of the base structure in an embodiment of the present utility model;

[0040] Figure 12 This is a schematic diagram of the buckle structure provided in the embodiments of this utility model;

[0041] Figure 13 This is a schematic diagram of the structure of the base provided in the embodiments of this utility model;

[0042] Figure 14 This is a schematic diagram of the structure of the top cover provided in an embodiment of this utility model.

[0043] Icons: 100-Circuit breaker body; 110-First limiting structure; 120-Operating mechanism; 200-Base; 210-Accommodation area; 220-Second limiting structure; 230-Abutting surface; 240-Upper locking surface; 250-Lower locking surface; 260-Accommodation groove; 271-Base; 272-Top cover; 273-First protruding plate; 274-Second protruding plate; 300-Groove; 400-Protrusion; 500-Snap-on; 510-Holding part; 520-Linkage part; 530-Abutting block. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0045] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0046] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0047] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0048] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0049] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.

[0050] Circuit breakers are core electrical safety devices, widely used in residential buildings, public facilities, and industrial manufacturing. Circuit breakers include single-pole (1P) and multi-pole (2P / 3P / 4P) types, and generally consist of a base and a detachable circuit breaker body that plugs into the base. However, there is a risk of mis-insertion when plugging the circuit breaker body into a multi-pole base. This means the circuit breaker body may not be inserted into the corresponding position on the base, resulting in a mismatch between the phase sequence of the base and the circuit breaker, which could lead to a phase loss and / or a zero loss in the circuit breaker body.

[0051] To address the risk of mis-insertion when the circuit breaker body is plugged into the multi-pole base, which can lead to circuit breaker malfunction, this invention provides a mis-insertion prevention structure. The overall structure, working principle, and technical effects of the mis-insertion prevention structure provided by this invention are described in detail below with reference to embodiments and accompanying drawings.

[0052] Please refer to Figures 1-14 This utility model provides an anti-misinsertion structure. The anti-misinsertion structure provided by this utility model has an anti-misinsertion function to avoid misalignment when the circuit breaker body 100 is inserted into the base 200, which may lead to phase loss and / or zero loss of the circuit breaker and the risk of burnout at the equipment end.

[0053] Please refer to Figures 1-5 This utility model provides an anti-misinsertion structure comprising a circuit breaker body 100, a base 200, a first limiting structure 110, and a second limiting structure 220. The circuit breaker body 100 is the core component of the circuit breaker, responsible for circuit connection, disconnection, and fault protection. The base 200 is used to fix and support the circuit breaker body 100 and provides an interface for electrical connection or mechanical operation. In this embodiment, the circuit breaker body 100 is provided with the first limiting structure 110, the base 200 has a receiving area 210, and the receiving area 210 is provided with the second limiting structure 220. When the circuit breaker body 100 is fitted into the receiving area 210, the second limiting structure 220 on the base 200 cooperates with the first limiting structure 110 on the circuit breaker body 100 to position the circuit breaker body 100. Furthermore, the circuit breaker body 100 provided in this embodiment is a circuit breaker with signal terminals for low-voltage connections. Both the circuit breaker body 100 and the base 200 are provided with mutually cooperating signal terminals.

[0054] By providing a first limiting structure 110 and signal terminals on the circuit breaker body 100, and a second limiting structure 220 and signal terminals on the groove wall of the receiving area 210 of the base 200, when the circuit breaker body 100 is inserted into the receiving area 210, the second limiting structure 220 cooperates with the first limiting structure 110, and the signal terminals cooperate with each other to position the circuit breaker body 100, guiding it to the corresponding position in the receiving area 210. If the circuit breaker body 100 is not inserted into the correct position, the second limiting structure 220 and the first limiting structure 110 may not align, and / or the signal terminals may not align, resulting in the circuit breaker body 100 failing to be inserted properly. This avoids the circuit breaker body 100 being misinserted on the base 200, which could lead to problems such as missing zeros or phases in the circuit breaker.

[0055] Furthermore, a second limiting structure 220 is provided on the groove wall of the receiving area 210. When the circuit breaker body 100 is inserted into the receiving area 210 on the base 200, the second limiting structure 220 on the base 200 cooperates with the first limiting structure 110 on the circuit breaker body 100 to position the circuit breaker body 100. Please refer to... Figures 1-6In some optional embodiments, the receiving area 210 is a groove formed in the base 200. When the circuit breaker body 100 mates with the base 200, the circuit breaker body 100 is inserted into the receiving area 210. Specifically, the base 200 has an upper engaging surface 240, a lower engaging surface 250, and a supporting surface 230. The upper engaging surface 240 and the lower engaging surface 250 are respectively connected to the two ends of the supporting surface 230. The upper engaging surface 240, the lower engaging surface 250, and the supporting surface 230 are arranged in a C-shape and together form the groove wall of the receiving area 210.

[0056] Furthermore, a second limiting structure 220 is provided on at least one of the upper latching surface 240, the lower latching surface 250, and the abutting surface 230. In this embodiment, the second limiting structure 220 is provided on the abutting surface 230 (e.g., Figure 3 In some alternative embodiments, the second limiting structure 220 may also be disposed on the upper latching surface 240 or the lower latching surface 250 (e.g., Figure 4 (As shown).

[0057] It is understood that when the second limiting structure 220 is set at different positions on the base 200, the first limiting structure 110 is set at different positions on the circuit breaker body 100 accordingly. So that when the circuit breaker body 100 is inserted into the receiving area 210 on the base 200, the first limiting structure 110 and the second limiting structure 220 cooperate.

[0058] Please refer to Figures 2-4 In some optional embodiments, the first limiting structure 110 includes a groove formed in the circuit breaker body 100, and the second limiting structure 220 includes a protrusion protruding from the receiving area 210. Furthermore, a signal terminal is provided on one pole of the circuit breaker body 100, and a signal terminal adapted to the signal terminal on the circuit breaker body 100 is provided on the receiving area 210. Grooves 300 are formed on the other poles of the circuit breaker body 100, and multiple protrusions 400 are provided on the receiving area 210, with each protrusion 400 corresponding to one of the multiple grooves 300.

[0059] Specifically, in this embodiment, the first limiting structure 110 includes a groove 300 formed in the circuit breaker body 100, and the second limiting structure 220 includes a protrusion 400 protruding from the receiving area 210.

[0060] Please refer to Figure 2 and Figure 4 When the protrusion 400 is provided on the abutment surface 230, a plurality of protrusions 400 are provided on the abutment surface 230, and the plurality of protrusions 400 can be arranged on the abutment surface 230 in a straight line direction.

[0061] Understandably, please refer to Figure 3 and Figure 5To improve the positioning effect of the circuit breaker body 100 on the base 200, in some optional embodiments, multiple protrusions 400 are staggered, and multiple grooves 300 corresponding one-to-one with the protrusions 400 on the abutment surface 230 are provided on the circuit breaker body 100. Adjacent protrusions 400 are located on different horizontal planes to achieve the staggered arrangement of multiple protrusions 400. Thus, the circuit breaker body 100 can only be smoothly inserted into the receiving area 210 when the grooves 300 on the circuit breaker body 100 correspond one-to-one with the protrusions 400 on the abutment surface 230. When the circuit breaker body 100 is not inserted into the correct position, the grooves 300 on the circuit breaker body 100 and the protrusions 400 on the abutment surface 230 cannot correspond one-to-one, and the protrusions 400 will abut against the groove wall of the receiving area 210, which will prevent the circuit breaker body 100 from being inserted into the correct position, thereby avoiding misinsertion of the circuit breaker body 100.

[0062] Furthermore, to further improve the positioning accuracy of the circuit breaker body 100 on the base 200, in some alternative embodiments, at least one of the cross-sectional shape and cross-sectional dimensions of the plurality of protrusions 400 is different (not shown in the figures). Therefore, when the phase sequence of the circuit breaker body 100 is misaligned with the phase sequence of the base 200, i.e., when the phase sequence of the circuit breaker body 100 relative to the base 200 is misaligned, the circuit breaker body 100 cannot be inserted into the receiving area 210, thus avoiding misinsertion of the circuit breaker body 100. Please refer to... Figure 7 and Figure 8 In this embodiment, the first limiting structure 110 may be a protrusion 400 protruding from the circuit breaker body 100, and the second limiting structure 220 may be a groove 300 formed in the receiving area 210. In some alternative embodiments, when the receiving area 210 is a groove formed on the base 200 for engaging the circuit breaker body 100, the first limiting structure 110 includes a protrusion 400 protruding from the circuit breaker body 100, and the second limiting structure 220 includes a groove 300 formed in the groove wall of the receiving area 210. The protrusion 400 is provided once, and the protrusion 400 and the signal terminal are located at the same pole of the circuit breaker body 100. A groove matching the protrusion 400 is formed in the receiving area 210, and a signal terminal is also provided on the receiving area 210.

[0063] In some alternative embodiments, the protrusion 400 and the signal terminal are disposed on the same pole of the circuit breaker body 100, and at least one protrusion 400 may be disposed on the same pole of the circuit breaker body 100. That is, a groove 300 is formed on at least one of the upper engaging surface 240, the lower engaging surface 250, and the abutting surface 230. Specifically, the groove 300 may be formed on the upper engaging surface 240, the lower engaging surface 250, or the abutting surface 230 individually; the groove 300 may also be formed on the upper engaging surface 240, the lower engaging surface 250, and the abutting surface 230 simultaneously; or the groove 300 may be formed on any two of the upper engaging surface 240, the lower engaging surface 250, and the abutting surface 230 simultaneously. Therefore, in this embodiment, the circuit breaker body 100 can only be inserted into the receiving area 210 when the protrusion 400 on the circuit breaker body 100 corresponds to the groove 300 on the groove wall of the receiving area 210, so as to achieve the positioning effect of the circuit breaker body 100 on the receiving area 210.

[0064] Furthermore, in some alternative embodiments, the protrusion 400 may also be disposed on the upper engaging surface 240 or the lower engaging surface 250, in which case the groove 300 on the circuit breaker body 100 is a through slot with one end open. That is, the circuit breaker body 100 can only be inserted into the receiving area 210 when the groove 300 on the circuit breaker body 100 is directly aligned with the protrusion 400 on the upper engaging surface 240 and / or the lower engaging surface 250. During the insertion of the circuit breaker body 100 into the receiving area 210, the protrusion 400 moves along the length of the groove 300, serving to guide the circuit breaker body 100 during insertion, thereby preventing mis-insertion when the circuit breaker body 100 is inserted into the base 200.

[0065] Please refer to Figures 9-12In some alternative embodiments, the receiving area 210 includes a groove formed in the base 200, and the anti-misinsertion structure also includes a latch 500, wherein the latch 500 is rotatably disposed within the circuit breaker body 100, and one end of the latch 500 can be rotated to extend outside the circuit breaker body 100. A movable operating mechanism 120 is provided within the circuit breaker body 100, through which an operator can control the closing and opening of the circuit breaker body 100. A receiving groove 260 is formed on the groove wall of the receiving area 210 on the base 200, one end of the latch 500 cooperates with the operating mechanism 120, and the other end of the latch 500 can be rotated to extend outside the circuit breaker body 100 and engage with the receiving groove 260. Specifically, during the process of inserting the circuit breaker body 100 into the receiving area 210, if the circuit breaker body 100 is misaligned or not fully inserted, the latch 500 abuts against the groove wall of the receiving area 210. At this time, the latch 500 holds the operating mechanism 120 in the open position, and the operating mechanism 120 prevents the circuit breaker body 100 from closing. When the circuit breaker body 100 is inserted into the receiving groove 260 by the latch 500, the latch 500 releases its lock on the operating mechanism 120, and the operating mechanism 120 releases its obstruction to the closing of the circuit breaker body 100, allowing the operator to close or open the circuit breaker through the operating mechanism 120.

[0066] It should be noted that when the heights of the first limiting structure 110, the second limiting structure 220, and the signal terminals are relatively small, even if the circuit breaker cannot be fully inserted in case of misinsertion, the circuit breaker's terminals may still be in contact with the busbar due to the small height of the anti-misinsertion structure, meaning the circuit breaker is energized. Therefore, to avoid this situation, a latch 500 is further provided. By setting the latch 500, with one end engaging with the operating mechanism 120 and the other end rotating to extend outside the circuit breaker body 100 and engage in the receiving groove 260, when the circuit breaker body 100 is misaligned or not fully inserted in the receiving area 210, the latch 500 abuts against the receiving area 210, hindering the movement of the operating mechanism 120, preventing the circuit breaker body 100 from closing, and avoiding energizing the circuit breaker. Thus, the circuit breaker body 100 will not be able to close in case of misinsertion, further improving the circuit breaker's anti-misinsertion effect.

[0067] In some optional embodiments, it should be noted that when the circuit breaker body 100 is a 4P multi-pole circuit breaker, the N-pole of the 4P multi-pole circuit breaker is provided with a signal terminal, which is recessed. Correspondingly, the signal terminal at the N-pole on the base 200 is protruding. Thus, the provision of the N-pole signal terminal can prevent the L-pole circuit breaker from being mistakenly inserted into the N-pole position of the base 200. In addition, the L-pole circuit breaker and the L-pole position on the base are provided with a matching limiting structure to further prevent the N-pole of the base 200 from not being inserted, thus avoiding the risk of equipment burnout due to a missing N-phase and a 380V voltage at the equipment end. Furthermore, when the height of the signal terminals and / or limiting structures is small, even if misinsertion occurs, the circuit breaker body 100 may not be fully inserted into the base 200, but the plug-in terminals and busbars may have already made contact, meaning there is a risk of the circuit breaker being energized. Therefore, a latch 500 is provided on each pole of the circuit breaker body. When the N pole is not inserted or is misinserted, the latch 500 will abut against the receiving area 210, hindering the movement of the operating mechanism 120, and thus preventing the circuit breaker body 100 from closing, thereby preventing the circuit breaker from being energized. When the N pole is inserted and any of the other three phases is not inserted, the missing phase can be identified through the signal terminals, protecting electrical safety.

[0068] For further details, please refer to Figure 12 In some optional embodiments, the latch 500 includes a holding part 510 and a linkage part 520 connected at a preset angle, the preset angle being greater than 90° and less than 180°. The linkage part 520 is connected to or abuts against the operating mechanism 120. An abutment block 530 is provided at the end of the holding part 510 away from the linkage part 520. The latch 500 can rotate until the abutment block 530 extends beyond the circuit breaker body 100, and the receiving groove 260 is adapted to the abutment block 530. Specifically, when the circuit breaker body 100 is mis-inserted or not properly inserted, the abutment block 530 abuts against the groove wall of the receiving area 210, the holding part 510 obstructs the movement of the operating mechanism 120, and the circuit breaker body 100 cannot be closed. When the circuit breaker body 100 is inserted into place and the abutment block 530 is snapped into the receiving slot 260, the restriction on the operating mechanism 120 is released, and the operator can drive the circuit breaker body 100 to close the circuit through the operating mechanism 120.

[0069] In some alternative embodiments, the receiving slot 260 can be formed on the upper contact surface 240 or the lower contact surface 250, or the receiving slot 260 can be formed on both the upper contact surface 240 and the lower contact surface 250 simultaneously. Correspondingly, a latch 500 corresponding to the receiving slot 260 is provided inside the circuit breaker body 100. This ensures that the circuit breaker body 100 cannot be closed in the event of misinsertion or improper insertion, achieving the effect of preventing misinsertion and improving the safety of the circuit breaker.

[0070] In some alternative embodiments, the receiving groove 260 can also be formed on the abutment surface 230. In this case, a latch 500 is provided on the side of the circuit breaker body 100 opposite to the abutment surface 230. When the circuit breaker body 100 is mis-inserted, that is, when the circuit breaker body 100 is misaligned on the base 200, the abutment block 530 of the latch 500 abuts against the abutment surface 230, which will cause the circuit breaker body 100 to be unable to close. Thus, the circuit breaker body 100 can also achieve the function of preventing mis-insertion.

[0071] In some other alternative embodiments, the receiving slot 260 may also be simultaneously provided on the abutment surface 230, the upper snap-fit ​​surface 240 and the lower snap-fit ​​surface 250, so that when the circuit breaker body 100 is inserted into the receiving area 210, the abutment blocks 530 of multiple latches 500 need to be snapped into the corresponding receiving slots 260 before the circuit breaker body 100 can be closed, thus ensuring the safety of the circuit breaker in use.

[0072] Please refer to Figure 13 and Figure 14 Furthermore, for the manufacturing of the circuit breaker body 100, when the first limiting block includes a protrusion 400 protruding from the groove wall of the receiving area 210, and the second limiting structure 220 includes a groove 300 formed in the circuit breaker body 100, the circuit breaker body 100 includes a base 271 and a top cover 272 that are interlocked. The base 271 and the top cover 272 are interlocked to form the outer shell of the circuit breaker body 100, and a space for installing the operating mechanism 120 is formed inside. A first protruding plate 273 is provided on the base 271, and a second protruding plate 274 is provided on the top cover 272. Both the first protruding plate 273 and the second protruding plate 274 are C-shaped plates. When the base 271 and the top cover 272 are interlocked, the first protruding plate 273 and the second protruding plate 274 interlock and together form the groove 300. By processing the circuit breaker body 100 into a base 271 and a top cover 272 that interlock with each other, the production and demolding of the circuit breaker body 100 can be facilitated.

[0073] In summary, the implementation principle of the anti-misinsertion structure provided by this utility model is as follows: by setting a first limiting structure 110 on the circuit breaker body 100 and a second limiting structure 220 on the receiving area 210 of the base 200, when the circuit breaker body 100 and the receiving area 210 are engaged, the second limiting structure 220 engages with the first limiting structure 110. Furthermore, the mutually engaging signal terminals set on the circuit breaker body 100 and the base 200 can also play a role in positioning the circuit breaker body 100, guiding the circuit breaker body 100 to be inserted into the corresponding position in the receiving area 210, thus preventing the circuit breaker body 100 from being misinserted on the base 200, which could lead to phase loss and / or zero loss in the circuit breaker, thereby improving the safety of the circuit breaker.

[0074] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims

1. A structure for preventing misinsertion, characterized in that, include: The circuit breaker body (100) is provided with a first limiting structure (110). A base (200) has a receiving area (210) and a second limiting structure (220) is provided on the receiving area (210); the second limiting structure (220) is used to cooperate with the first limiting structure (110) when the circuit breaker body (100) is engaged with the receiving area (210) to position the circuit breaker body (100); Furthermore, both the circuit breaker body (100) and the base (200) are provided with mutually cooperating signal terminals.

2. The anti-misinsertion structure according to claim 1, characterized in that, The first limiting structure (110) includes a groove (300) formed in the circuit breaker body (100), and the second limiting structure (220) includes a protrusion (400) protruding from the receiving area (210); or, The first limiting structure (110) includes a protrusion (400) protruding from the circuit breaker body (100), and the second limiting structure (220) includes a groove (300) formed in the receiving area (210). When the circuit breaker body (100) mates with the receiving area (210), the protrusion (400) mates with the groove (300).

3. The anti-misinsertion structure according to claim 1, characterized in that, The first limiting structure (110) includes a groove (300) formed in the circuit breaker body (100), and the second limiting structure (220) is a protrusion (400) protruding in the receiving area (210). The circuit breaker body (100) has a signal terminal on one pole, and the other poles of the circuit breaker body (100) have grooves (300). The receiving area (210) has a protrusion (400) that matches the groove (300).

4. The anti-misinsertion structure according to claim 3, characterized in that, The adjacent protrusions (400) are staggered.

5. The anti-misinsertion structure according to claim 3, characterized in that, The cross-sectional shape and cross-sectional size of the plurality of protrusions (400) are different at least one.

6. The anti-misinsertion structure according to claim 1, characterized in that, The first limiting structure (110) includes a protrusion (400) protruding from the circuit breaker body (100), and the second limiting structure (220) includes a groove (300) formed in the receiving area (210). The circuit breaker body (100) has a protrusion (400) and a signal terminal on one of its poles, and the receiving area (210) has a groove (300) that matches the protrusion (400).

7. The anti-misinsertion structure according to claim 1, characterized in that, The first limiting structure (110) and the signal terminal are both located on the side of the circuit breaker body (100) near the base (200).

8. The anti-misinsertion structure according to any one of claims 1-7, characterized in that, The anti-misinsertion structure also includes a latch (500), which is rotatably disposed inside the circuit breaker body (100). The circuit breaker body (100) has a movable operating mechanism (120), and the base (200) has a receiving groove (260). One end of the latch (500) cooperates with the operating mechanism (120), and the other end of the latch (500) can rotate to the outside of the circuit breaker body (100) and be latched into the receiving groove (260). When the latch (500) abuts against the base (200), the latch (500) hinders the movement of the operating mechanism (120) to prevent the circuit breaker body (100) from closing; and is used to release the restriction on the operating mechanism (120) when the latch (500) is engaged in the receiving groove (260).

9. The anti-misinsertion structure according to claim 8, characterized in that, The latch (500) includes a holding part (510) and a linkage part (520) connected at a preset angle. One end of the holding part (510) is provided with an abutment block (530). The latch (500) can rotate until the abutment block (530) extends outside the circuit breaker body (100). The linkage part (520) cooperates with the operating mechanism (120). The receiving groove (260) is adapted to the abutment block (530).

10. The anti-misinsertion structure according to claim 1, characterized in that, The first limiting structure (110) includes a protrusion (400) protruding from the receiving area (210), and the second limiting structure (220) includes a groove (300) formed in the circuit breaker body (100). The circuit breaker body (100) includes a base (271) and a top cover (272) that are interlocked with each other. A first protruding plate (273) is provided on the base (271), and a second protruding plate (274) is provided on the top cover (272). When the base (271) is engaged with the top cover (272), the first protrusion (273) and the second protrusion (274) engage and together form the groove (300).

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