Control box key panel with multi-layer protection function

Abstract

A control box key panel with multi-layer protection function, comprising a control box main body and a key panel, further comprising: a composite protection layer, including an insulating substrate layer, an electromagnetic shielding layer and an elastic protection layer, the surface of the elastic protection layer forms a protruding part corresponding to the key unit, and the protruding part is provided with a pressure conducting column; a heat dissipation structure composed of a plurality of interval distributed heat conducting bosses, the heat conducting bosses penetrate through the insulating substrate layer and are thermally coupled with the packaging shell of the main control module, and the airflow channels are formed between the plurality of heat conducting bosses. The composite protection layer is adopted to cooperate with the pressure conducting column structure to realize electromagnetic shielding and mechanical stress dispersion while ensuring the touch feeling; the innovative heat dissipation structure design generates the micro-turbulence effect through the honeycomb-like micropore structure inside the heat conducting boss, and the natural convection heat dissipation efficiency is improved through the synergistic effect of the honeycomb-like micropore and the airflow channel, and the heat dissipation effect of the main control module is effectively improved.

Description

Technical Field

[0001] Specifically, this utility model is a control box button panel with multi-layer protection functions. Background Technology

[0002] Traditional control box button panels commonly suffer from the following technical defects in industrial applications:

[0003] 1. Electromagnetic Interference Sensitivity: Conventional single-layer protective structures struggle to simultaneously meet both physical protection and electromagnetic shielding requirements. Especially in high-interference scenarios such as those involving frequency converters and high-power motors, button signals are susceptible to common-mode noise contamination, leading to increased false triggering rates. Existing solutions often employ planar shielding layer designs, resulting in edge coupling effects from high-frequency electromagnetic waves passing through button gaps.

[0004] 2. Thermal Management Defects: During continuous operation, the high-density packaged main control module experiences heat buildup, leading to thermal creep failure of the solder joints. Traditional heat dissipation solutions rely on large-area copper plating or external fans, which present a trade-off between heat dissipation efficiency and protection level in sealed environments.

[0005] 3. Weak points in environmental sealing: Ordinary sealing rings with single-layer protective structures cannot simultaneously block liquid penetration and electromagnetic leakage. In humid and dusty working conditions, they are prone to insulation failure due to medium corrosion. Utility Model Content

[0006] In view of the above, this utility model provides a control box button panel with multi-layer protection function to solve the problems mentioned in the background art.

[0007] The technical solution adopted by this utility model to solve its technical problem is as follows: a control box button panel with multi-layer protection function, including a control box body and a button panel, the button panel being installed on the control box body, a main control module being disposed inside the control box body, and button units being disposed on the button panel, further including: a composite protective layer, including an insulating substrate layer, an electromagnetic shielding layer and an elastic protective layer stacked sequentially from bottom to top, the surface of the elastic protective layer forming a protrusion corresponding to the button unit, the protrusion having a pressure conduction post, the end of the pressure conduction post being embedded in the deformation groove of a metal spring, the edge of the deformation groove having a contact limiting flange; the electromagnetic shielding layer being conductive to the grounding terminal of the main control module through a conductive post; a heat dissipation structure, consisting of multiple spaced heat-conducting protrusions, the heat-conducting protrusions penetrating the insulating substrate layer and being thermally coupled to the encapsulation shell of the main control module, the multiple heat-conducting protrusions forming an airflow channel.

[0008] Preferably, the deformation groove is connected to the button unit to achieve circuit conduction.

[0009] Preferably, the interior of the heat-conducting protrusion is provided with a honeycomb microporous structure, which is in communication with the airflow channel.

[0010] Preferably, the surface of the main control module's packaging shell is provided with heat dissipation fins and heat-conducting bosses forming a wedge-shaped mating structure.

[0011] Preferably, the edge of the composite protective layer is provided with a stepped sealing structure, which includes alternating conductive sealing strips and insulating sealing strips, and the conductive sealing strips are electrically connected to the electromagnetic shielding layer.

[0012] The control box button panel of this utility model improves the traditional flat protective structure by adopting a composite protective layer combined with a pressure transmission column structure, which achieves electromagnetic shielding and mechanical stress dispersion while ensuring tactile feedback.

[0013] The innovative heat dissipation structure design utilizes the micro-turbulence effect generated by the honeycomb microporous structure inside the heat-conducting boss. The synergistic effect of the honeycomb microporous structure and airflow channels enhances the efficiency of natural convection heat dissipation. Furthermore, the heat dissipation fins on the surface of the main control module's package shell form a wedge-shaped contact structure with the heat-conducting boss, effectively improving the heat dissipation effect of the main control module.

[0014] The composite protective layer has a stepped sealing structure at its edge, which includes alternating conductive and insulating sealing strips, achieving both electromagnetic sealing and environmental sealing requirements within a limited space. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the composite protective layer.

[0017] Figure 3 This is a partial structural diagram of the protrusion and pressure transmission column.

[0018] Figure 4 This is a schematic diagram of the heat dissipation structure.

[0019] Figure 5 This is a partial structural diagram of a heat-conducting boss with a honeycomb-like microporous structure inside.

[0020] Figure 6 This is a partial structural diagram showing that the surface of the packaged housing has heat dissipation fins.

[0021] Figure 7 This is a partial structural diagram of the conductive sealing strip and the insulating sealing strip.

[0022] In the diagram, 1. Control box body; 101. Main control module; 2. Button panel; 201. Button unit; 3. Insulating substrate layer; 4. Electromagnetic shielding layer; 5. Elastic protective layer; 6. Protrusion; 7. Pressure conduction column; 8. Deformation groove; 9. Heat-conducting boss; 901. Honeycomb microporous structure; 10. Encapsulation shell; 11. Airflow channel; 12. Conductive sealing strip; 13. Insulating sealing strip. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and some embodiments.

[0024] exist Figures 1-7 Among them, a control box button panel 2 with multi-layer protection function includes a control box body 1 and a button panel 2. The button panel 2 is installed on the control box body 1. The control box body 1 is provided with a main control module 101. The button panel 2 is provided with a button unit 201. It also includes a composite protective layer, which includes an insulating substrate layer 3, an electromagnetic shielding layer 4 and an elastic protective layer 5 stacked from bottom to top. The surface of the elastic protective layer 5 forms a protrusion 6 corresponding to the button unit 201. The protrusion 6 is provided with a pressure transmission post 7. The end of the pressure transmission post 7 is embedded in the deformation groove 8 of a metal spring. The edge of the deformation groove 8 is provided with a contact limiting flange. The electromagnetic shielding layer 4 is connected to the grounding terminal of the main control module 101 through the conductive post; the deformation groove 8 is connected to the button unit 201 to realize circuit conduction; when the operator presses the protrusion 6 of the elastic protective layer 5, the pressure transmission post 7 transmits the mechanical pressure to the metal spring, causing the deformation groove 8 to undergo elastic deformation and connect with the contact electrode of the button unit 201, thereby triggering the main control module 101 in the control box body 1. Through the composite protective layer structure of the insulating substrate layer 3, the electromagnetic shielding layer 4 and the elastic protective layer 5, an electromagnetic-mechanical dual protection system is constructed, which achieves electromagnetic shielding and mechanical stress dispersion while ensuring tactile feedback.

[0025] In this embodiment, the heat dissipation structure consists of multiple spaced heat-conducting protrusions 9. The heat-conducting protrusions 9 penetrate the insulating substrate layer 3 and are thermally coupled to the encapsulation shell 10 of the main control module 101. An airflow channel 11 is formed between the multiple heat-conducting protrusions 9. The interior of the heat-conducting protrusions 9 is provided with a honeycomb microporous structure 901, which communicates with the airflow channel 11. The surface of the encapsulation shell 10 of the main control module 101 is provided with heat dissipation fins, which form a wedge-shaped contact structure with the heat-conducting protrusions 9. The heat conduction path begins with the heat energy generated when the main control module 101 is working, and firstly, efficient heat conduction occurs through the heat dissipation fins on the surface of its encapsulation shell 10 and the wedge-shaped contact surface of the heat-conducting protrusions 9. The wedge-shaped mating structure generates surface contact pressure, effectively reducing contact thermal resistance. The micro-turbulence effect generated by the honeycomb micropore structure 901 inside the heat-conducting boss 9 enhances the natural convection heat dissipation efficiency through the synergistic effect of the honeycomb micropores and the airflow channel 11. Furthermore, the wedge-shaped mating structure formed by the heat dissipation fins on the surface of the main control module 101's housing 10 and the contact surface of the heat-conducting boss 9 effectively improves the heat dissipation effect of the main control module 101.

[0026] In this embodiment, the composite protective layer has a stepped sealing structure at its edge, which includes alternating conductive sealing strips 12 and insulating sealing strips 13. The conductive sealing strips 12 are electrically connected to the electromagnetic shielding layer 4. The stepped sealing structure at the edge of the composite protective layer, which includes alternating conductive sealing strips 12 and insulating sealing strips 13, simultaneously achieves electromagnetic sealing and environmental sealing requirements within a limited space. The stepped sealing structure, through the alternating arrangement of conductive sealing strips 12 and insulating sealing strips 13, constructs a multi-stage creepage distance, simultaneously achieving electromagnetic sealing and environmental sealing requirements within a limited space.

[0027] In practical implementation, when the operator presses the protrusion 6 of the elastic protective layer 5, the pressure transmission column 7 transmits mechanical pressure to the metal spring, causing the deformation groove 8 to undergo elastic deformation and connect with the contact electrode of the button unit 201, thereby triggering the main control module 101 inside the control box body 1. Through the composite protective layer structure of the insulating substrate layer 3, the electromagnetic shielding layer 4, and the elastic protective layer 5, an electromagnetic-mechanical dual protection system is constructed, ensuring tactile feedback while achieving electromagnetic shielding and mechanical stress dispersion. The heat conduction path originates from the main control module 101. The heat generated during operation is transformed by the micro-turbulence effect produced by the honeycomb microporous structure 901 inside the heat-conducting boss 9. This enhances the efficiency of natural convection heat dissipation through the synergistic effect of the honeycomb microporous structure and the airflow channel 11. Furthermore, the heat dissipation fins on the surface of the main control module 101's housing 10 form a wedge-shaped contact structure with the heat-conducting boss 9, effectively improving the heat dissipation effect of the main control module 101. The stepped sealing structure, through the alternating arrangement of conductive sealing strips 12 and insulating sealing strips 13, constructs multi-stage creepage distances, achieving both electromagnetic sealing and environmental sealing requirements within a limited space.

[0028] It is worth noting that in the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified. In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can also refer to a mechanical connection. The circuits described in this utility model are all commonly used circuits in the art, and other related components are all commonly used existing components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0029] It will be apparent to those skilled in the art that this utility model patent is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model patent. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this utility model patent is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be encompassed within this utility model patent. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A control box button panel with multi-layer protection function, comprising a control box body and a button panel, the button panel being mounted on the control box body, a main control module being disposed inside the control box body, and button units being disposed on the button panel, characterized in that: Also includes: The composite protective layer includes an insulating substrate layer, an electromagnetic shielding layer, and an elastic protective layer stacked sequentially from bottom to top. The surface of the elastic protective layer forms a protrusion corresponding to the button unit. The protrusion is provided with a pressure transmission post. The end of the pressure transmission post is embedded in the deformation groove of the metal spring. The edge of the deformation groove is provided with a contact limiting flange. The electromagnetic shielding layer is connected to the ground terminal of the main control module through the conductive post. The heat dissipation structure consists of multiple spaced heat-conducting protrusions that penetrate the insulating substrate layer and are thermally coupled to the packaging shell of the main control module. An airflow channel is formed between the multiple heat-conducting protrusions.

2. The control box key panel with multi-layer protection function according to claim 1, characterized in that: The deformable groove is connected to the button unit to enable circuit conduction.

3. The control box key panel with multi-layer protection according to claim 1, characterized in that: The heat-conducting protrusion has a honeycomb-shaped microporous structure inside, which is connected to the airflow channel.

4. The control box key panel with multi-layer protection according to claim 3, characterized in that: The surface of the main control module's packaging shell is provided with heat dissipation fins and heat-conducting bosses forming a wedge-shaped mating structure.

5. The multi-layered protective control box key panel of claim 1, wherein: The composite protective layer has a stepped sealing structure at its edge, which includes alternating conductive sealing strips and insulating sealing strips. The conductive sealing strips are electrically connected to the electromagnetic shielding layer.

Images