CN220306186U - Intelligent molded case circuit breaker - Google Patents

Abstract

The utility model discloses an intelligent molded case circuit breaker, which comprises a shell, a circuit board and an electronic module; the shell is provided with a module bin for placing the electronic module, the circuit board is positioned in the shell and below the module bin, the bottom wall of the module bin is provided with a through groove, and the interface of the electronic module and the circuit board passes through the through groove to be in plug-in fit; a blocking structure is arranged between the lower surface of the bottom wall of the module bin and the upper surface of the circuit board, and the blocking structure surrounds the outer side of the through groove so as to reduce the gas from entering the module bin from the through groove; the utility model has the characteristics of reducing the gas entering the module bin and the like.

Description

Intelligent molded case circuit breaker

Technical Field

The utility model relates to the technical field of low-voltage power, in particular to an intelligent molded case circuit breaker.

Background

As one of the circuit breakers, a molded case circuit breaker is widely used in various fields. With the continuous progress of society, the requirements on the molded case circuit breaker are higher and higher, and functions such as a communication module and software control are added in the molded case circuit breaker, and the functions are often matched with a circuit board in the circuit breaker in a form of an electronic module.

For example, CN217691004U discloses a measuring circuit breaker, which includes a housing and a switch cover covering the housing, and is characterized in that: the measuring circuit breaker further comprises an electronic module and an electronic surface cover, the shell forms an electronic groove below the switch surface cover, the electronic module is arranged in the electronic groove, the electronic surface cover is covered on the electronic groove, and the electronic surface cover and the outer side face of the switch surface cover are arranged on the same plane. The circuit breaker adopts the plugging fit of the electronic module and the circuit board.

At present, in order to realize the plug-in matching of the electronic module and the circuit board, the interface of the electronic module is plugged in with the interface on the circuit board, and the electronic slot is provided with a notch for matching the two interfaces. Because the gap of the notch is hit, the circuit breaker can generate gas in the breaking process, and the gas can act on the lower surface of the electronic module through the notch to push the electronic module to be separated from the matching with the circuit board, so that the situation is quite undesirable.

Disclosure of Invention

In view of the above, the present utility model aims to overcome the defects in the prior art, and is to provide an intelligent molded case circuit breaker, which can ensure the stability of the matching between an electronic module and a circuit board.

The utility model provides an intelligent molded case circuit breaker, which comprises a shell, a circuit board and an electronic module; the shell is provided with a module bin for placing the electronic module, the circuit board is positioned in the shell and below the module bin, the bottom wall of the module bin is provided with a through groove, and the interface of the electronic module and the circuit board passes through the through groove to be in plug-in fit; the blocking structure is arranged between the lower surface of the bottom wall of the module bin and the upper surface of the circuit board and surrounds the outer side of the through groove so as to reduce gas from the through groove to enter the module bin.

By adopting the structure, the blocking structure is arranged around the through groove, so that even if the gas is generated inside when the circuit breaker breaks, the blocking structure can greatly reduce the gas entering the module bin, thereby reducing the possibility that the electronic module is pushed out of the module bin by the gas, greatly improving the stability of the product and being beneficial to the product to pass some special experiments.

The blocking structure is a blocking rib, the blocking rib and the module bin are integrally arranged, and one surface of the blocking rib, which is away from the module bin, is attached to the upper surface of the circuit board; or, block the structure and be blocking the muscle, block the muscle and be fixed in on the circuit board, block the muscle and deviate from the circuit board one side and paste with the diapire in module storehouse mutually.

By adopting the structure, the blocking rib can be arranged on the module bin or on the circuit board, and the possibility that gas enters the module bin through the through groove can be reduced as long as the far surface of the blocking rib is tightly attached to the bottom wall of the corresponding module bin or the surface of the circuit board.

The bottom wall of the module bin is provided with a sinking part, the through groove is positioned on the sinking part, and the sinking part is attached to the upper surface of the circuit board to form the blocking structure.

With this structure, the blocking structure is formed by a kind of sink, both taking into account the injection moulding of the product and also taking into account the closing effect of the blocking structure.

The shell comprises an upper cover, a middle cover and a base, wherein the middle cover is arranged on the base, the upper cover is arranged on the middle cover, and the module bin is arranged on the upper cover; the module bin and the upper cover are integrated, or the module bin and the upper cover are clamped and fixed, or the module bin and the upper cover are fastened by screws.

By adopting the structure, the design of the upper cover, the middle cover and the base is adopted for the shell, so that the distribution of functional components inside the circuit breaker product is facilitated, and meanwhile, the module bin and the upper cover are fastened by adopting an integral piece or a clamping connection or a screw, so that the processing and forming between the module bin and the upper cover are facilitated.

The electronic module is a communication module and/or a controller.

The electronic module is adopted as a communication module and/or a controller, and the structure can be applied to a general electronic molded case circuit breaker and a multifunctional circuit breaker such as a type measuring switch.

The electronic module comprises a controller and a communication module, wherein the controller is in plug-in fit with the circuit board, and the communication module is in plug-in fit with the controller.

By adopting the structure, the controller directly forms an electrical connection effect with the circuit board through the plug connection, the communication module is positioned on the controller, the electrical connection effect between the communication module and the controller is formed through the plug connection, and when the communication module or the controller breaks down, the connection relationship can be released through the plug connection, so that the replacement effect is realized.

The controller comprises one or more of an overload protection circuit, a short-circuit protection circuit, a phase-failure protection circuit, an overvoltage protection circuit, an undervoltage protection circuit and an over-temperature protection circuit.

With this structure, the circuit breaker can realize one or more protection functions through the controller.

The electronic module comprises a first interface and a second interface which are arranged side by side, a third interface and a fourth interface are arranged on the circuit board, the first interface and the third interface form plug-in fit, and the second interface and the fourth interface are plug-in fit; the bottom wall of the module bin is provided with a first isolation rib, the circuit board is provided with a first isolation groove, and the first isolation rib is matched with the first isolation groove to isolate a third interface and a fourth interface; and/or the electronic module comprises a fifth interface, a sixth interface is arranged on the circuit board, and the fifth interface and the sixth interface form plug-in fit.

By adopting the structure, the arrangement of the first interface, the second interface, the third interface and the fourth interface enriches the number of the interfaces, and is beneficial to arranging more types of protection circuits between the circuit board and the electronic module. Also, the arrangement of the fifth interface and the sixth interface further embodies the possibility that more protection circuits can be arranged.

At least 3 second isolation ribs are arranged on the bottom wall of the module bin at intervals, corresponding second isolation grooves are formed in the circuit board, and the second isolation ribs are inserted into the corresponding second isolation grooves.

By adopting the design of the structure, the second isolation ribs and the second isolation grooves are beneficial to arranging some components which need to be isolated from each other on the circuit board.

The electronic module is provided with an annular bulge, and the annular bulge is arranged around an interface of the electronic module; the sinking part comprises a first wall and a second wall, the second wall is connected with the bottom wall of the module bin through the first wall, and the through groove is formed in the second wall; the annular protrusion extends into the countersink and is attached to the first wall.

By adopting the structure, the structure that the annular bulge is attached to the first wall is beneficial to improving the air tightness between the module bin and the electronic module.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 shows a schematic configuration of a circuit breaker according to embodiment 1 of the present utility model;

fig. 2 is a schematic view showing the structure of an upper cover in embodiment 1 of the present utility model;

fig. 3 is a schematic diagram showing the structure of an electronic module in embodiment 1 of the present utility model;

fig. 4 is a schematic diagram showing the matching of the upper cover, the electronic module and the circuit board and a partial enlarged view thereof in embodiment 1 of the present utility model;

fig. 5 shows an exploded view and a partial enlarged view of the upper cover, the electronic module, and the circuit board in embodiment 1 of the present utility model;

fig. 6 shows a cross-sectional view of the upper cover, the electronic module, and the wiring board and a partial enlarged view thereof in embodiment 1 of the present utility model;

fig. 7-8 show two variant embodiments of the blocking structure according to example 1 of the utility model.

Description of the embodiments

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, directly connected, indirectly connected via an intervening medium, or in communication between two elements or in an interaction relationship between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

Examples

Referring to fig. 1-6, an intelligent molded case circuit breaker includes a housing and an electronic module.

A housing, a housing 11, a middle cover 12 and an upper cover 13.

The housing 11 and the middle cover 12 cooperate to form a space in which components such as an operating mechanism, a trip, a contact system, an arc extinguishing space, etc. can be placed, where the operating mechanism, the trip, the contact system, and the arc extinguishing space are common knowledge in the art, and detailed structures thereof will not be repeated here.

The middle cover 12 and the upper cover 13 cooperate to form a cavity in which the electrical operation structure, the circuit board 2, etc. can be placed, where the electrical operation structure, the circuit board 2, etc. are common knowledge in the art, and the specific structure thereof will not be described herein.

The upper cover 13 is formed with a module housing 131 by integral injection molding, the module housing 131 is located at an upper position of the circuit board 2, and the electronic module can be accommodated in the module housing 131. The bottom wall of the module cabin 131 is provided with a through groove, and the interface between the circuit board 2 and the electronic module can be connected by passing through the through groove. In order to reduce the impact of the gas generated during the breaking of the circuit breaker on the electronic module, a blocking structure is arranged between the lower surface of the bottom wall of the module bin 131 and the upper surface of the circuit board 2, and the blocking structure is arranged around the outer side of the through groove, so that the gas entering the module bin 131 from the through groove can be greatly reduced. In addition, the module housing 131 may be formed separately from the upper cover 13, and may be fastened by fastening, screw fastening, or the like.

The specific blocking structure is embodied in this embodiment as: a sinking part is arranged on the bottom wall of the module cabin 131, the sinking part comprises a first wall 132a and a second wall 132b, the second wall 132b is connected with the bottom wall of the module cabin 131 through the first wall 132a, a through groove is formed in the second wall 132b, and the lower surface of the second wall 132b is tightly attached to the upper surface of the circuit board 2, so that a blocking structure capable of reducing gas entering the module cabin 131 from the through groove is formed. As shown in fig. 7, as a modified embodiment, a sinking structure is not required, but a blocking rib 132c extends downwards at the bottom wall of the module chamber 131, the blocking rib 132c is arranged around the through groove, and the blocking rib 132c is attached to the upper surface of the circuit board 2, so that the air entering into the module chamber 131 from the through groove can be reduced. As shown in fig. 8, there is another modification to the blocking rib 132c, but the blocking rib 132c is provided on the circuit board 2, and the blocking rib 132c is attached to the lower surface of the bottom wall of the module housing 131, so that the entry of gas from the through groove into the module housing 131 can be reduced. In either embodiment, the structure of the through groove is formed so as to be adjacent to the circuit board 2 and surround the through groove, and the technical effect of reducing the entry of gas from the through groove into the module chamber 131 can be achieved.

An electronic module comprising a controller 3 and a communication module 4. The controller 3 and the circuit board 2 may together form a circuit breaker for controlling the inside of the circuit breaker, receiving signals for processing the controller 3, signal transmission of the communication module 4, etc., where the main function of the circuit board 2 is to transmit sampled signals (such as temperature signals, current information, voltage information) to the controller 3, which is a technology belonging to the prior art, so that the description is omitted in this embodiment. The controller 3 is internally provided with a chip with a protection function, a display screen, keys and the like, the controller 3 is internally provided with a control circuit, when the detected main loop is abnormal, the control circuit controls the breaker to control the opening and closing of the opening and closing system, and the abnormal occurrence of the main loop can be one or more of instantaneous, overvoltage, undervoltage, three-phase unbalance, over-temperature of a connecting terminal, island prevention, frequency and the like, and no matter the abnormal protection is the abnormal protection in the prior art. Therefore, this embodiment will not be described. The communication module 4 is specifically a carrier module in this embodiment, and of course, other communication modules 4 such as modbus, 485, bluetooth, NFC, WIFI and the like in the field of circuit breakers may be used.

In this embodiment, the communication module 4 and the controller 3 are electrically connected by plugging in the form of connectors, plugs, sockets, and other interfaces. The controller 3 and the circuit board 2 are also connected in a plugging manner by adopting the interface forms such as a connector, a plug, a socket and the like.

Specifically, the controller 3 includes a first interface and a second interface (not shown in the figure) that are arranged side by side, the circuit board 2 is provided with a third interface 21a and a fourth interface 21b, the first interface and the third interface 21a form a plug-in fit, and the second interface and the fourth interface 21b form a plug-in fit. Of course, the corresponding second wall 132b is also provided with a through groove structure matched with the number of the interfaces, such as a first through groove 132b1 (for the first interface and the third interface 21a to form a plug-in fit) and a second through groove 132b2 (for the second interface and the fourth interface 21b to form a plug-in fit). In order to isolate the first and second interfaces (so-called third and fourth interfaces 21a and 21 b) which are arranged side by side, a first isolation rib 132b3 is further provided on the second wall 132b, a first isolation groove 21c is provided on the circuit board 2, the first isolation rib 132b3 is located between the first and second interfaces, and the first isolation rib 132b3 cooperates with the first isolation groove 21c to isolate the third and fourth interfaces 21a and 21b. In order to further enrich the arrangement of the protection circuit between the circuit board 2 and the controller 3, a fifth interface (not shown in the figure) is further arranged on the controller 3, a sixth interface is further arranged on the circuit board 2, and a through groove for matching the fifth interface with the sixth interface and a corresponding sinking part are also arranged on the bottom wall of the module cabin 131, so as to reduce the entry of gas into the module cabin 131 from the matching position of the fifth interface and the sixth interface.

In order to improve the sealing effect, annular protrusions 31 are arranged at the first interface, the second interface and the fifth interface of the controller 3, and the annular protrusions 31 are arranged around the interfaces, so that after the controller 3 is matched with the module bin 131, the annular protrusions 31 can be attached to the first wall 132a of the sinking part, and the sealing performance between the controller 3 and the module bin 131 is improved.

In order to facilitate arrangement of some components to be isolated from each other on the circuit board 2, 3 second isolation ribs 131c are arranged on the bottom wall of the module bin 131 at intervals, corresponding second isolation grooves 21d are arranged on the circuit board 2, the second isolation ribs 131c are inserted into the corresponding second isolation grooves 21d, and through the cooperation arrangement, the components to be isolated from each other can be separated by the second isolation ribs 131 c.

Of course, the electronic module disclosed in this embodiment includes the controller 3 and the communication module 4, and the inventive concept of the blocking structure can also be applied to the circuit breaker with only the controller 3 or only the communication module 4 alone, so as to achieve the effect of reducing the gas entering the module cabin 131 through the through slot.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims (10)

1. An intelligent molded case circuit breaker, a shell, a circuit board and an electronic module; the shell is provided with a module bin for placing the electronic module, the circuit board is positioned in the shell and below the module bin, the bottom wall of the module bin is provided with a through groove, and the interface of the electronic module and the circuit board passes through the through groove to be in plug-in fit; the method is characterized in that: a blocking structure is arranged between the lower surface of the bottom wall of the module bin and the upper surface of the circuit board, and the blocking structure surrounds the outer side of the through groove to reduce gas from entering the module bin from the through groove.

2. An intelligent molded case circuit breaker according to claim 1, wherein: the blocking structure is a blocking rib, the blocking rib and the module bin are integrally arranged, and one surface of the blocking rib, which is away from the module bin, is attached to the upper surface of the circuit board; or, block the structure and be blocking the muscle, block the muscle and be fixed in on the circuit board, block the muscle and deviate from the circuit board one side and paste with the diapire in module storehouse mutually.

3. An intelligent molded case circuit breaker according to claim 1, wherein: the bottom wall of the module bin is provided with a sinking part, the through groove is positioned on the sinking part, and the sinking part is attached to the upper surface of the circuit board to form the blocking structure.

4. An intelligent molded case circuit breaker according to claim 1, wherein: the shell comprises an upper cover, a middle cover and a base, wherein the middle cover is arranged on the base, the upper cover is arranged on the middle cover, and the module bin is arranged on the upper cover; the module bin and the upper cover are integrated, or the module bin and the upper cover are clamped and fixed, or the module bin and the upper cover are fastened by screws.

5. An intelligent molded case circuit breaker according to claim 1, wherein: the electronic module is a communication module and/or a controller.

6. An intelligent molded case circuit breaker according to claim 1, wherein: the electronic module comprises a controller and a communication module, wherein the controller is in plug-in fit with the circuit board, and the communication module is in plug-in fit with the controller.

7. The intelligent molded case circuit breaker according to claim 6, wherein: the controller comprises one or more of an overload protection circuit, a short circuit protection circuit, a phase-failure protection circuit, an overvoltage protection circuit, an undervoltage protection circuit and an over-temperature protection circuit.

8. An intelligent molded case circuit breaker according to claim 1, wherein: the electronic module comprises a first interface and a second interface which are arranged side by side, a third interface and a fourth interface are arranged on the circuit board, the first interface and the third interface form plug-in fit, and the second interface and the fourth interface are plug-in fit; the bottom wall of the module bin is provided with a first isolation rib, the circuit board is provided with a first isolation groove, and the first isolation rib is matched with the first isolation groove to isolate a third interface and a fourth interface; and/or the electronic module comprises a fifth interface, a sixth interface is arranged on the circuit board, and the fifth interface and the sixth interface form plug-in fit.

9. An intelligent molded case circuit breaker according to claim 1, wherein: at least 3 second isolation ribs are arranged on the bottom wall of the module bin at intervals, corresponding second isolation grooves are formed in the circuit board, and the second isolation ribs are inserted into the corresponding second isolation grooves.

10. An intelligent molded case circuit breaker according to claim 3, wherein: the electronic module is provided with an annular bulge, and the annular bulge is arranged around an interface of the electronic module; the sinking part comprises a first wall and a second wall, the second wall is connected with the bottom wall of the module bin through the first wall, and the through groove is formed in the second wall; the annular protrusion extends into the countersink and is attached to the first wall.