Shell module and leakage protection plug

Abstract

The utility model discloses a shell module of leakage protection plug. A shell module of leakage protection plug includes: inner layer shell, it is enclosed and is formed for accommodating the inner chamber of electronic component of leakage protection plug, outer layer shell, it surrounds the inner layer shell, the outer layer shell and the inner layer shell between form air flow channel, the outer layer shell is apart from and is provided with air inlet and air outlet, air inlet and air outlet respectively with air flow channel intercommunication, fan, it is located in the air flow channel, to make the air flow in the air flow channel from air inlet to air outlet. The leakage protection plug and shell module thereof of the utility model have good heat dissipation effect.

Description

Technical Field

[0001] This utility model belongs to the field of leakage protection technology, specifically relating to a housing module and a leakage protection plug. Background Technology

[0002] Residual current circuit breakers (RCCBs) detect changes in residual current and can cut off the power supply when necessary. They are widely used in electrical appliances, especially high-power household appliances, to protect users' electrical safety. RCCBs have a circuit board with numerous electronic components that generate heat during operation. If this heat cannot be dissipated in time, the internal temperature of the RCCB will rise, affecting its reliability and lifespan. Therefore, a RCCB with good heat dissipation is needed.

[0003] The information disclosed in the background section is only intended to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0004] In view of this, the present invention provides a housing module for a leakage current protection plug, which facilitates heat dissipation within the leakage current protection plug. The present invention also provides a leakage current protection plug with better heat dissipation performance.

[0005] The first aspect of this utility model provides a housing module for a leakage current protection plug, comprising:

[0006] The inner shell encloses and forms an inner cavity for housing the electronic components of the leakage protection plug;

[0007] An outer shell surrounds the inner shell, and an airflow channel is formed between the outer shell and the inner shell. An air inlet and an air outlet are provided on the outer shell at intervals, and the air inlet and the air outlet are each connected to the airflow channel.

[0008] A fan is disposed in the airflow channel so that airflow flows from the air inlet to the air outlet within the airflow channel.

[0009] In some preferred embodiments, the outer shell module includes a partition connecting the inner shell and the outer shell. The airflow channel is divided by the partition to form a head end and a tail end. The air inlet is located on one side of the partition and communicates with the head end, and the air outlet is located on the other side of the partition and communicates with the tail end.

[0010] In some preferred embodiments, the fan is located in the middle section of the airflow channel, the middle section being located between the beginning and the end.

[0011] In some preferred embodiments, the outer shell module has a top plate and a bottom plate, the inner shell and the outer shell are respectively connected between the top plate and the bottom plate, and the airflow channel surrounds the inner shell.

[0012] In some further preferred embodiments, the upper surface of the partition is in contact with the top plate, and the lower surface of the partition is in contact with the bottom plate.

[0013] In some further preferred embodiments, the inner shell, the outer shell, the partition, and the top plate are integral.

[0014] In some further preferred embodiments, there are multiple fans, which are arranged vertically between the top plate and the bottom plate.

[0015] In some preferred embodiments, the outer shell has a pair of long sides and a pair of short sides, the air inlet and the air outlet are located on one of the short sides, and the fan is located adjacent to the other short side.

[0016] In some preferred embodiments, the outer shell is provided with an air inlet plate and an air outlet plate, the air inlet plate having a plurality of air inlets and the air outlet plate having a plurality of air outlets.

[0017] The second aspect of this utility model provides a leakage protection plug, which includes the aforementioned outer shell module, wherein the outer shell module is provided with a wire hole for a cable to pass through the inner cavity.

[0018] This utility model has the following advantages:

[0019] The leakage current protection plug and its outer shell module of this utility model are designed with a double-layer structure including an inner shell and an outer shell. The gap between the inner shell and the outer shell is used as an airflow channel. A fan is installed in the channel to allow cold air to enter and absorb heat, thereby reducing the internal temperature of the leakage current protection plug. Then, the heated air is discharged to carry away the heat, thus preventing heat from accumulating inside the leakage current protection plug and providing good heat dissipation. Attached Figure Description

[0020] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A perspective view of a housing module according to an embodiment of the present invention is shown, wherein the base plate and fan are not shown.

[0022] Figure 2 This is a perspective view of a leakage protection plug according to an embodiment of the present utility model.

[0023] Figure 3 This is a front view of a leakage protection plug according to an embodiment of the present invention, wherein the cable is not shown.

[0024] Figure 4 for Figure 3 Sectional view along the AA direction.

[0025] Figure 5 This is a bottom view of a leakage protection plug according to an embodiment of the present utility model, wherein the cable is not shown.

[0026] Figure 6 for Figure 5 Sectional view along the BB direction.

[0027] in:

[0028] 100. Residual current protection plug; 101. Housing module; 102. Cable;

[0029] 1. Inner shell; 11. Inner cavity; 2. Outer shell; 21. Air inlet; 22. Air outlet; 23. Air inlet plate; 24. Air outlet plate; 3. Airflow channel; 31. Head end; 32. Tail end; 5. Fan; 6. Partition plate; 7. Top plate; 8. Bottom plate. Detailed Implementation

[0030] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art. It should be noted that the description of these embodiments is intended to aid in understanding the present invention, but does not constitute a limitation thereof.

[0031] In this document, the terms “upper,” “lower,” “front,” “rear,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0032] Figures 1 to 6 The diagrams are drawn to scale. To keep the instructions concise, the proportions of each component are not listed individually. However, the proportions and positions of each component should be considered part of the content of this instruction manual.

[0033] Figure 1 An embodiment of a housing module 101 is shown. Figures 2 to 6A residual current device (RCD) plug 100 using the housing module 101 is shown. The RCD plug 100 can cut off the power supply circuit when a leakage current exceeds a set value, or manually cut off the power supply circuit as needed. The RCD plug 100 is used on the power cord of household appliances for connecting to the power supply and can cut off the power supply to the household appliances when needed.

[0034] Reference Figures 1 to 6 The outer casing module 101 of the leakage current protection plug 100 includes: an inner shell 1, an outer shell 2, a fan 5, a partition 6, a top plate 7, and a bottom plate 8. The inner shell 1 encloses an inner cavity 11, which is used to house the electronic components of the leakage current protection plug 100, including but not limited to: fixed contacts, moving contacts, tripping devices, solenoids, etc. The outer shell 2 surrounds the inner shell 1, and an airflow channel 3 is formed between the outer shell 2 and the inner shell 1. An air inlet 21 and an air outlet 22 are provided on the outer shell 2 at intervals, and the air inlet 21 and the air outlet 22 are each connected to the airflow channel 3. The fan 5 is located in the airflow channel 3 so that airflow flows from the air inlet 21 to the air outlet 22 within the airflow channel 3.

[0035] Combination Figure 1 and Figure 4 The airflow channel 3 is roughly annular, surrounding the inner shell 1. A partition 6 connects the inner shell 1 and the outer shell 2, dividing the annular airflow channel 3 into a head end 31 and a tail end 32. An air inlet 21 is located on one side of the partition 6 and communicates with the head end 31, while an air outlet 22 is located on the other side of the partition 6 and communicates with the tail end 32. A fan 5 is positioned in the middle section of the airflow channel 3, located between the head end 31 and the tail end 32. The air inlet side of the fan 5 faces the head end 31 of the airflow channel 3, and the air outlet side of the fan 5 faces the tail end 32 of the airflow channel 3. The fan 5 provides the driving force for the gas to flow in the airflow channel 3. Specifically, the gas is drawn into the airflow channel 3 from the inlet 21 at the beginning end 31, flows along the approximately annular path defined by the airflow channel 3 through the fan 5, and is finally discharged from the outlet 32 ​​at the end end 32. During this process, the airflow is heated, the hot air flows out carrying away heat from the housing module 101, and the continuous intake of cold air lowers the temperature inside the housing module 101. In other embodiments, the fan 5 can also be located at other positions in the airflow channel 3, such as near the beginning end 31 or near the end end 32.

[0036] like Figure 6As shown, the inner shell 1 and outer shell 2 are each connected between the top plate 7 and the bottom plate 8. The airflow channel 3 surrounds the inner shell 1, and the top plate 7 and the bottom plate 8 define the upper and lower boundaries of the airflow channel 3, respectively. The upper surface of the partition 6 is in contact with the top plate 7, and the lower surface of the partition 6 is in contact with the bottom plate 8. In one embodiment, the inner shell 1, outer shell 2, partition 6, and top plate 7 are integral. More specifically, the inner shell 1, outer shell 2, partition 6, and top plate 7 can be integrally molded from plastic. The inner shell 1, outer shell 2, and partition 6 extend downward from the top plate 7, and the lower edge of the inner shell 1, outer shell 2, and partition 6 is fixedly connected to or in sealed contact with the bottom plate 8; the inner shell 1 separates the airflow channel 3 from the inner cavity 11 enclosed by the inner shell 1, and the two are not connected, so there is almost no airflow exchange.

[0037] There can be multiple fans 5, which can be arranged vertically between the top plate 7 and the bottom plate 8. For example, multiple fans 5 can be mounted on a fan bracket, with a through hole in the middle for the cable of the leakage protection plug 100 to pass through. In other embodiments, in addition to arranging multiple fans 5 vertically, multiple fans 5 can also be arranged along the airflow direction.

[0038] like Figure 4 As shown, the outer shell 2 has a pair of long sides and a pair of short sides. The air inlet 21 and the air outlet 22 are located on one of the short sides, and the fan 5 is located adjacent to the other short side. The outer shell 2 is generally rectangular or rounded rectangular in shape, with the fan 5 and the air inlet 21 or air outlet 22 located on the pair of sides that are farther apart. Figure 2 and Figure 6 The outer shell 2 is provided with an air inlet plate 23 and an air outlet plate 24. The air inlet plate 23 has multiple air inlets 21 as described above, and the air outlet plate 24 has multiple air outlets 22 as described above. By opening multiple air inlets 21 on the air inlet plate 23 and then fixing the air inlet plate 23 to the outer shell 2, and by opening multiple air outlets 22 on the air outlet plate 24 and then fixing the air outlet plate 24 to the outer shell 2, the molding and processing difficulty of the outer shell 2 is reduced.

[0039] Reference Figure 1 The outer casing module 101 is provided with a cable through hole for the cable to pass into the inner cavity 11. The inner shell 1 and the outer shell 2 are both provided with cable through holes, which are aligned with each other. The cable passes through the two cable through holes and the fan 5 or between the fans 5 to enter the inner cavity 11.

[0040] The outer casing module 101 of the embodiment uses the gap between the inner shell 1 and the outer shell 2 as an airflow channel 3, in which a fan 5 is installed. Cold air enters the airflow channel 3 to absorb heat and reduce the internal temperature of the leakage protection plug 100. Then, the heated air is discharged to carry away the heat, thus avoiding the accumulation of heat inside the leakage protection plug 100. It has a good heat dissipation function, which helps to improve the reliability and service life of the leakage protection plug 100.

[0041] As indicated in this specification and claims, the terms "comprising" and "including" only indicate the inclusion of explicitly identified steps and elements, and these steps and elements do not constitute an exclusive list, and the method or apparatus may also include other steps or elements.

[0042] Those skilled in the art will understand that, unless otherwise stated, the singular forms “a,” “b,” and “the” used herein may also include the plural forms. It will be further understood that “multiple” in this invention refers to two or more, and other quantifiers are similarly understood.

[0043] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0044] The above embodiments are only for illustrating the technical concept and features of this utility model, and are preferred embodiments. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly, and should not be construed as limiting the protection scope of this utility model. All equivalent transformations or modifications made based on the principles of this utility model should be covered within the protection scope of this utility model.

Claims

1. A housing module for a leakage current protection plug, characterized in that, include: The inner shell encloses and forms an inner cavity for housing the electronic components of the leakage protection plug; An outer shell surrounds the inner shell, and an airflow channel is formed between the outer shell and the inner shell. An air inlet and an air outlet are provided on the outer shell at intervals, and the air inlet and the air outlet are each connected to the airflow channel. A fan is disposed in the airflow channel so that airflow flows from the air inlet to the air outlet within the airflow channel.

2. The housing module according to claim 1, characterized in that, The outer shell module includes a partition connecting the inner shell and the outer shell. The airflow channel is divided by the partition to form a head end and a tail end. The air inlet is located on one side of the partition and communicates with the head end, and the air outlet is located on the other side of the partition and communicates with the tail end.

3. The outer casing module according to claim 2, characterized in that, The fan is located in the middle section of the airflow channel, which is situated between the beginning and the end.

4. The outer casing module according to claim 2, characterized in that, The outer shell module has a top plate and a bottom plate, the inner shell and the outer shell are respectively connected between the top plate and the bottom plate, and the airflow channel surrounds the inner shell.

5. The housing module according to claim 4, characterized in that, The upper surface of the partition is in contact with the top plate, and the lower surface of the partition is in contact with the bottom plate.

6. The housing module according to claim 4, characterized in that, The inner shell, the outer shell, the partition, and the top plate are integral.

7. The housing module according to claim 4, characterized in that, The number of fans is multiple, and the multiple fans are arranged vertically between the top plate and the bottom plate.

8. The housing module according to claim 1, characterized in that, The outer shell has a pair of long sides and a pair of short sides, with the air inlet and the air outlet located on one of the short sides, and the fan located adjacent to the other short side.

9. The housing module according to claim 1, characterized in that, The outer shell is provided with an air inlet plate and an air outlet plate. The air inlet plate has multiple air inlets, and the air outlet plate has multiple air outlets.

10. A leakage current protection plug, characterized in that, The housing module includes any one of claims 1 to 9, wherein the housing module is provided with a wire-passing hole for a cable to pass through the inner cavity.

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