Control panel for leakage current sensor

Abstract

The utility model relates to the technical field of control panels, in particular to a control panel for a leakage current sensor, which comprises a control panel body and a plurality of radiating fin assemblies, the radiating fin assemblies are arranged at the bottom of the control panel body in an array mode, each radiating fin assembly comprises a first radiating fin, a second radiating fin and a third radiating fin, and the first radiating fin, the second radiating fin and the third radiating fin are arranged on the control panel body. The first cooling fin is connected with the control panel body, the second cooling fin is arranged on the first cooling fin in a sliding mode in the height direction of the first cooling fin, and the third cooling fin is arranged on the second cooling fin in a sliding mode in the height direction of the second cooling fin. The second cooling fins and the third cooling fins are drawn out during installation, the occupied space is small in the transportation process, the preset height can be spaced between the control panel body and the external fixing plate during use, and the heat dissipation performance is good.

Description

Technical Field

[0001] The present application relates to the technical field of control boards, and more specifically to a control board for a leakage current sensor. Background Art

[0002] A leakage current sensor is a device that detects whether current in a circuit leaks from the normal path of the circuit and flows to the ground or other equipment through an abnormal path. The leakage current sensor contains a control board, which is a circuit board that can play a control role in the circuit. Heat dissipation during operation is an important parameter for the control board.

[0003] The patent document (CN206743655U) discloses a circuit board with good heat dissipation performance, including a circuit board outer shell, a heat sink and a plurality of main heat sinks and auxiliary heat sinks. The heat sink is arranged on the lower surface of the circuit board outer shell, and the main heat sink and the auxiliary heat sink are both arranged below the heat sink. By designing the heat sink below the circuit board outer shell and the auxiliary heat sink on the surface of the heat sink, a gap exists between the circuit board and the external fixing plate during installation. The gap allows air to flow on the surface of the heat sink to accelerate the heat dissipation effect. However, since the main heat sink and the auxiliary heat sink are normally arranged vertically below the heat sink, the overall volume of the circuit board with good heat dissipation performance is increased, resulting in more space being occupied during transportation, and the number of circuit boards that can be transported by vehicles of the same specification is reduced.

[0004] Therefore, there is a need to provide a control board for a leakage current sensor that occupies less space during transportation, can keep a predetermined height between the control board body and the external fixing plate when in use, and has good heat dissipation. Utility Model Content

[0005] The main purpose of the present application is to provide a control board for a leakage current sensor, wherein the control board for the leakage current sensor comprises a control board body and a plurality of heat sink assemblies, the heat sink assemblies are arrayed at the bottom of the control board body, each of the heat sink assemblies comprises a first heat sink, a second heat sink and a third heat sink, one side of the first heat sink is fixedly connected to the control board body, the second heat sink is slidably arranged on the first heat sink in the height direction of the first heat sink, and the third heat sink is slidably arranged on the second heat sink in the height direction of the second heat sink, and the second heat sink and the third heat sink are folded during transportation to reduce the occupied space during transportation, and the second heat sink and the third heat sink are pulled out during installation to reach a specified height size. Compared with the prior art, the present application has the advantages of occupying less space during transportation, and the control board body and the external fixed plate can be spaced at a predetermined height during use, and the heat dissipation is better.

[0006] Another object of the present application is to provide a control board for a leakage current sensor, wherein the first heat sink has a first sliding cavity on the side away from the control board body, the second heat sink has a second sliding cavity on the side away from the first heat sink, the second heat sink is slidably arranged in the first sliding cavity, and the third heat sink is slidably arranged in the second sliding cavity. When the second heat sink slides, the second heat sink is placed in the first sliding cavity or extends out of the cavity opening of the first sliding cavity by a predetermined distance, and the end of the third heat sink close to the first heat sink is placed in the second sliding cavity or extends out of the cavity opening of the second sliding cavity by a predetermined distance, thereby realizing that the second heat sink is slidably arranged on the first heat sink, and the third heat sink is slidably arranged on the second heat sink.

[0007] Another object of the present application is to provide a control board for a leakage current sensor, wherein each of the heat sink fin assemblies further comprises two spring sheets, a middle section of one spring sheet is rotatably connected to the bottom of the second heat sink, and a middle section of the other spring sheet is rotatably connected to the bottom of the third heat sink, both ends of each of the spring sheets have a guide column, the guide column is located on the side of the spring sheet, the bottom side walls of the first sliding cavity and the second sliding cavity have two guide grooves, each of the guide grooves has a guide column slidably arranged, the bottom walls of the first sliding cavity and the second sliding cavity have two symmetrically arranged card slots, when the second heat sink or the third heat sink extends out of the cavity opening of the first sliding cavity or the second sliding cavity by a predetermined distance, the two ends of the corresponding spring sheet are snapped into the corresponding two card slots, and the height positions of the second heat sink and the third heat sink are selectively fixed by the spring sheets.

[0008] In order to achieve at least one of the above-mentioned invention purposes, the present application provides a control board for a leakage current sensor, wherein the control board for the leakage current sensor comprises:

[0009] a control panel body; and

[0010] A plurality of heat sink fin assemblies, wherein the heat sink fin assembly array is arranged at the bottom of the control board body, each of the heat sink fin assemblies comprises a first heat sink, a second heat sink and a third heat sink, one side of the first heat sink is fixedly connected to the control board body, the second heat sink is slidably arranged on the first heat sink in the height direction of the first heat sink, and the third heat sink is slidably arranged on the second heat sink in the height direction of the second heat sink.

[0011] In one or more embodiments of the present application, the first heat sink has a first sliding cavity on a side facing away from the control board body, the second heat sink has a second sliding cavity on a side facing away from the first heat sink, the second heat sink is slidably disposed in the first sliding cavity, and the third heat sink is slidably disposed in the second sliding cavity. When the second heat sink slides, the second heat sink is placed in the first sliding cavity or extends out of the cavity opening of the first sliding cavity by a predetermined distance, and the end of the third heat sink close to the first heat sink is placed in the second sliding cavity or extends out of the cavity opening of the second sliding cavity by a predetermined distance.

[0012] In one or more embodiments of the present application, each of the heat sink fin assemblies further comprises two spring sheets, a middle section of one spring sheet is rotatably connected to the bottom of the second heat sink, and a middle section of the other spring sheet is rotatably connected to the bottom of the third heat sink, both ends of each of the spring sheets have a guide column, the guide column is located on the side of the spring sheet, the bottom side walls of the first sliding cavity and the second sliding cavity have two guide grooves, each of the guide grooves has a guide column slidably arranged, the bottom walls of the first sliding cavity and the second sliding cavity have two symmetrically arranged slots, and when the second heat sink or the third heat sink extends out of the cavity opening of the first sliding cavity or the second sliding cavity by a predetermined distance, the two ends of the corresponding spring sheet are snapped into the corresponding two slots.

[0013] In one or more embodiments of the present application, the bottom of the second heat sink and the bottom of the third heat sink each have at least one notch, and each of the spring sheets is placed in the corresponding notch.

[0014] In one or more embodiments of the present application, each of the card slots has an arc protrusion on one side, each of the spring sheets has two compensation grooves at the bottom, and the second heat sink and the third heat sink have two avoidance grooves at the bottom. When the spring sheets are arranged horizontally, the arc protrusion extends into the compensation groove, and the avoidance groove is located directly above the arc protrusion.

[0015] In one or more embodiments of the present application, when the two spring sheets are arranged horizontally, the openings of the first sliding cavity and the second sliding cavity are flush, and the third heat sink extends out of the opening of the second sliding cavity by a predetermined distance.

[0016] In one or more embodiments of the present application, a heat sink is provided between the control board body and the heat sink fin assembly, and two sides of the heat sink are respectively connected to the control board body and the heat sink fin assembly.

[0017] In an embodiment of the present application, a control board for a leakage current sensor includes a control board body and a plurality of heat sink fin assemblies, an array of heat sink fin assemblies is arranged at the bottom of the control board body, each heat sink fin assembly includes a first heat sink, a second heat sink and a third heat sink, the first heat sink is connected to the control board body, the second heat sink is slidably arranged on the first heat sink in the height direction of the first heat sink, the third heat sink is slidably arranged on the second heat sink in the height direction of the second heat sink, the second heat sink and the third heat sink are folded during transportation to reduce the occupied space during transportation, and the second heat sink and the third heat sink are pulled out during installation to reach a specified height size. Compared with the prior art, the method has the advantages of occupying less space during transportation, and the control board body and the external fixed plate can be spaced at a predetermined height during use, and the heat dissipation is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] These and / or other aspects and advantages of the present application will become clearer and easier to understand from the following detailed description of the embodiments of the present application in conjunction with the accompanying drawings, in which:

[0019] Figure 1 The figure shows a structural schematic diagram of a control board for a leakage current sensor of the utility model at a certain viewing angle;

[0020] Figure 2 The figure shows a schematic diagram of the structure of a control board for a leakage current sensor from another perspective;

[0021] Figure 3 The figure shows a cross-sectional view of the heat sink fin assembly in a retracted state;

[0022] Figure 4 The figure shows a cross-sectional view of the heat sink fin assembly in an unfolded state;

[0023] Figure 5 Picture shows Figure 3 A partial enlarged view of point C. DETAILED DESCRIPTION

[0024] The terms and words used in the following specification and claims are not limited to the literal meanings, but are merely used by the inventor to enable a clear and consistent understanding of the present application. Therefore, it will be apparent to those skilled in the art that the following description of various embodiments of the present application is provided for illustrative purposes only and not for the purpose of limiting the present application as defined by the appended claims and their equivalents.

[0025] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0026] Although ordinals such as "first," "second," and the like will be used to describe various components, those components are not limited herein. The term is used only to distinguish one component from another. For example, a first component may be referred to as a second component, and likewise, a second component may be referred to as a first component without departing from the teachings of the utility model concept. The term "and / or" as used herein includes any and all combinations of one or more associated listed items.

[0027] The terms used herein are only used for the purpose of describing various embodiments and are not intended to be limiting. As used herein, singular forms are intended to also include plural forms, unless the context clearly indicates an exception. In addition, it will be understood that the terms "including" and / or "having" when used in this specification specify the presence of the described features, numbers, steps, operations, components, elements or combinations thereof, without excluding the presence or addition of one or more other features, numbers, steps, operations, components, elements or groups thereof.

[0028] Schematic diagram of a control board for a leakage current sensor.

[0029] refer to Figures 1 to 5 According to a preferred embodiment of the present utility model, a control board for a leakage current sensor is provided. Figure 1 and Figure 2 As shown, it includes a control board body 10, a heat sink 20 and a plurality of heat sink fin assemblies 30, the heat sink 20 is located between the control board body 10 and the heat sink fin assembly 30, and the two sides of the heat sink 20 are respectively connected to the control board body 10 and the heat sink fin assembly 30, and the connection method includes but is not limited to welding.

[0030] Specifically, Figure 3As shown, the heat sink fin assembly 30 is arranged in an array at the bottom of the control board body 10, and each of the heat sink fin assemblies 30 includes a first heat sink 301, a second heat sink 302 and a third heat sink 303. One side of the first heat sink 301 is fixedly connected to the control board body 10 through the heat sink, the second heat sink 302 is slidably disposed on the first heat sink 301 in the height direction of the first heat sink 301, and the third heat sink 303 is slidably disposed on the second heat sink 302 in the height direction of the second heat sink 302.

[0031] It should be noted that, from the factory to the transportation stage, the first heat sink 301, the second heat sink 302 and the third heat sink 303 overlap in the height direction of the control board body 10; and when in use and installation, the second heat sink 302 is slid out of the first heat sink 301, and the third heat sink 303 is slid out of the second heat sink 302 by a predetermined distance, and the overall height of the first heat sink 301, the second heat sink 302 and the third heat sink 303 reaches a predetermined height dimension. It is obvious that compared with the prior art in which the length of the heat sink is fixed and fixedly installed at the bottom of the control board body 10, the embodiment of the present application is achieved by dividing the heat sink into multiple pieces and sliding the multiple heat sinks in sequence. During transportation, by overlapping the first heat sink 301, the second heat sink 302 and the third heat sink 303 in the height direction of the control board body 10, the overall height of the leakage current sensor control board is low, and the transportation space occupied by a single leakage current sensor control board is small. During use, by sliding the second heat sink 302 out of the first heat sink 301 and sliding the third heat sink 303 out of the second heat sink 302 by a predetermined distance, the overall height of the heat spreading fin assembly reaches a predetermined height dimension, meeting the heat dissipation requirements, and having the advantages of occupying less space during transportation, and being able to keep the control board body 10 and the external fixing plate spaced at a predetermined height when in use, and having better heat dissipation.

[0032] Furthermore, in order to realize that the second heat sink 302 is slidably disposed on the first heat sink 301, and the third heat sink 303 is slidably disposed on the second heat sink 302, as shown in FIG. Figure 3 and Figure 4As shown, the first heat sink 301 has a first sliding cavity 3011 on the side facing away from the control board body 10, the second heat sink 302 has a second sliding cavity 3021 on the side facing away from the first heat sink 301, the second heat sink 302 is slidably disposed in the first sliding cavity 3011, and the third heat sink 303 is slidably disposed in the second sliding cavity 3021. When the second heat sink 302 slides, the second heat sink 302 is placed in the first sliding cavity 3011 or extends out of the cavity opening of the first sliding cavity 3011 by a predetermined distance. When the third heat sink 303 slides, one end of the third heat sink 303 close to the first heat sink 301 is placed in the second sliding cavity 3021 or extends out of the cavity opening of the second sliding cavity 3021 by a predetermined distance.

[0033] Furthermore, in order to realize that the second heat sink 302 is normally placed in the first sliding cavity 3011, as Figure 3 and Figure 4 As shown, one end of the third heat sink 303 close to the first heat sink 301 is placed in the second sliding cavity 3021, and each of the heat sink fin assemblies 30 further includes two springs 304, the middle section of one spring 304 is rotatably connected to the bottom of the second heat sink 302 in a hinged manner, and the middle section of the other spring 304 is rotatably connected to the bottom of the third heat sink 303, and each of the two ends of each spring 304 has a guide column (not shown in the figure), and the guide column is located at the spring 30 4, the bottom side walls of the first sliding cavity 3011 and the second sliding cavity 3021 are each provided with two guide grooves 30111, and a guide column is slidably arranged in each of the guide grooves 30111. More specifically, the guide columns on both ends of one elastic sheet 304 are respectively slidably arranged in the guide groove 30111 on the first sliding cavity 3011, and the guide columns on both ends of the other elastic sheet 304 are respectively slidably arranged in the guide groove 30111 on the second sliding cavity 3021.

[0034] It should be noted that, under normal conditions, the spring piece 304 is arranged horizontally under the action of its own elastic force. Since the middle section of the spring piece 304 is rotationally connected to the second heat sink 302 or the middle section of the third heat sink 303, when the spring piece 304 is not deformed, one end of the third heat sink 303 and the second heat sink 302 are both placed in the first sliding cavity 3011; when the installer pulls the third heat sink 303, the middle section of the spring piece 304 rotationally connected to the third heat sink 303 is subjected to an upward pulling force. At the same time, because the two ends of the spring piece 304 are slidably arranged in the guide groove 30111 through the guide column, as the middle section of the third heat sink 303 is subjected to force and moves upward, the two ends of the corresponding spring piece 304 will move toward each other along the corresponding guide groove 30111, making the spring piece 304 as a whole arched, and the third heat sink 303 extends out of the second sliding cavity 30 21 of the cavity opening; it should also be pointed out that when the third heat sink 303 extends out of the cavity opening of the second sliding cavity 3021 by a predetermined distance, since the spring piece 304 rotatably connected to the third heat sink 303 is slidably connected to the guide groove 30111 on the second heat sink 302, when the guide column on this spring piece 304 abuts against the end wall of the guide groove 30111, an upward pulling force is applied to the third heat sink 303, the second heat sink 302 is subjected to the pulling force and moves upward, and the guide columns on both ends of the other spring piece 304 are made to move toward each other along the corresponding guide groove 30111, until the guide column on this spring piece 304 also abuts against the groove wall of the corresponding guide groove 30111, the length of the second heat sink 302 extending out of the first sliding cavity 3011 and the length of the third heat sink 303 extending out of the second sliding cavity 3021 reach the maximum length.

[0035] Furthermore, in order to realize that the second heat sink 302 and the third heat sink 303 are extended to a predetermined length and then fixed in position, as shown in FIG. Figure 3 and Figure 4 As shown, the bottom walls of the first sliding cavity 3011 and the second sliding cavity 3021 have two symmetrically arranged slots 30112. When the second heat sink 302 or the third heat sink 303 extends out of the cavity opening of the first sliding cavity 3011 or the second sliding cavity 3021 by a predetermined distance, the two ends of the corresponding spring sheet 304 are inserted into the corresponding two slots 30112.

[0036] It should be noted that when the second heat sink 302 or the third heat sink 303 extends out of the first sliding cavity 3011 or the second sliding cavity 3021 to the maximum length, the two ends of the corresponding spring 304 are located between the two slots 30112, and the assembler only needs to relax some of the hand strength, that is, reduce the hand strength on the second heat sink 302 or the third heat sink 303, then the second heat sink 302 or the third heat sink 303 will move along the first sliding cavity 3011 and the second sliding cavity 3021 to the slot 30112 under the action of its own elastic force, and at a certain moment, fall into the slot 30112 and get stuck, so as to determine the position of the second heat sink 302 or the third heat sink 303. In addition, since the spring 304 is elastic, when the heat sink assembly 30 is pressed against the external fixing part, the spring 304 can provide a certain buffering effect.

[0037] Furthermore, in order to realize that the spring piece 304 does not occupy additional space in the height direction of the first sliding cavity 3011 or the second sliding cavity 3021 when being arranged horizontally, as shown in FIG. Figure 3 and Figure 4 As shown, the bottom of the second heat sink 302 and the bottom of the third heat sink 303 each have at least one notch 3022 , and one end edge of the notch 3022 is flush with the side of the second heat sink 302 or the third heat sink 303 , and each of the spring pieces 304 is placed in the corresponding notch 3022 .

[0038] Furthermore, in order to prevent the two ends of the spring sheet 304 from returning to the initial position during the sliding process of the card slot 30112, as shown in FIG. Figure 5 As shown, each of the slots 30112 has an arc protrusion 30113 on one side, and each of the spring sheets 304 has two compensation grooves 3041 at the bottom. The second heat sink 302 and the third heat sink 303 have two avoidance grooves 3023 at the bottom. When the spring sheets 304 are arranged horizontally, the arc protrusion 30113 extends into the compensation groove 3041, and the avoidance groove 3023 is located directly above the arc protrusion 30113.

[0039] It should be noted that, by providing the arc protrusion 30113 , when the two ends of the spring piece 304 are located between the two slots 30112 and move toward the slots 30112 , they are easily blocked by the arc protrusion 30113 and stuck in the slots 30112 .

[0040] Furthermore, in order to facilitate the pulling out of the third heat sink 303, Figure 3As shown, when the two elastic sheets 304 are arranged horizontally, the openings of the first sliding cavity 3011 and the second sliding cavity 3021 are flush, and the third heat sink 303 extends out of the opening of the second sliding cavity 3021 by a predetermined distance.

[0041] In summary, the control board for the leakage current sensor based on the embodiment of the present application is explained, which provides the control board for the leakage current sensor with advantages such as taking up less space during transportation, and having a predetermined height between the control board body and the external fixing plate when in use and better heat dissipation.

[0042] It is worth mentioning that in the embodiment of the present application, the control board for the leakage current sensor has a simple structure, does not involve complex manufacturing processes and expensive materials, and has high economic efficiency. At the same time, for manufacturers, the control board for the leakage current sensor provided by the present application is easy to produce and has low cost, which is more conducive to controlling production costs and further conducive to product promotion and use.

[0043] It should be understood by those skilled in the art that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

Claims

1. A control board for a leakage current sensor, characterized in that: The control board for the leakage current sensor includes a control panel body; and A plurality of heat sink fin assemblies, wherein the heat sink fin assembly array is arranged at the bottom of the control board body, each of the heat sink fin assemblies comprises a first heat sink, a second heat sink and a third heat sink, one side of the first heat sink is fixedly connected to the control board body, the second heat sink is slidably arranged on the first heat sink in the height direction of the first heat sink, and the third heat sink is slidably arranged on the second heat sink in the height direction of the second heat sink.

2. The control board for the leakage current sensor according to claim 1, characterized in that: The first heat sink has a first sliding cavity on a side facing away from the control board body, the second heat sink has a second sliding cavity on a side facing away from the first heat sink, the second heat sink is slidably disposed in the first sliding cavity, and the third heat sink is slidably disposed in the second sliding cavity. When the second heat sink slides, the second heat sink is placed in the first sliding cavity or extends out of the cavity opening of the first sliding cavity by a predetermined distance, and the end of the third heat sink close to the first heat sink is placed in the second sliding cavity or extends out of the cavity opening of the second sliding cavity by a predetermined distance.

3. The control board for the leakage current sensor according to claim 2, characterized in that: Each of the heat dissipation fin assemblies also includes two spring sheets, the middle section of one spring sheet is rotatably connected to the bottom of the second heat sink, and the middle section of the other spring sheet is rotatably connected to the bottom of the third heat sink. Both ends of each of the spring sheets have a guide column, and the guide column is located on the side of the spring sheet. The bottom side walls of the first sliding cavity and the second sliding cavity are each provided with two guide grooves, and a guide column is slidably arranged in each of the guide grooves. The bottom walls of the first sliding cavity and the second sliding cavity are each provided with two symmetrically arranged card grooves. When the second heat sink or the third heat sink extends out of the cavity opening of the first sliding cavity or the second sliding cavity by a predetermined distance, the two ends of the corresponding spring sheet are snapped into the corresponding two card grooves.

4. The control board for the leakage current sensor according to claim 3, characterized in that: The bottom of the second heat sink and the bottom of the third heat sink are each provided with at least one notch groove, and each of the elastic sheets is placed in the corresponding notch groove.

5. The control board for the leakage current sensor according to claim 4, characterized in that: Each of the slots has an arc protrusion on one side, each of the spring sheets has two compensation grooves at the bottom, and the second heat sink and the third heat sink have two avoidance grooves at the bottom. When the spring sheets are arranged horizontally, the arc protrusion extends into the compensation groove, and the avoidance groove is located directly above the arc protrusion.

6. The control board for the leakage current sensor according to claim 5, characterized in that: When the two elastic sheets are arranged horizontally, the openings of the first sliding cavity and the second sliding cavity are flush, and the third heat sink extends out of the opening of the second sliding cavity by a predetermined distance.

7. The control board for the leakage current sensor according to any one of claims 1 to 6, characterized in that: A heat sink is provided between the control board body and the heat sink fin assembly, and two sides of the heat sink are respectively connected to the control board body and the heat sink fin assembly.

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