Inverter PCB onboard switch

Abstract

The utility model relates to the technical field of inverters, and particularly discloses an inverter PCB onboard switch, which comprises a switch element welded on an inverter mainboard, the switch element comprises a switch main body and a keycap, the switch main body is provided with a connecting mechanism used for pressing the switch main body to switch on or switch off the switch element, and the keycap is arranged on the switch main body. According to the utility model, the switch element is integrated on the inverter main board, so that the switch element and the photovoltaic inverter main board are integrated, the signal transmission path is obviously shortened, the parasitic inductance and capacitance are greatly reduced, and the power consumption is reduced. The radiation interference of the high-frequency signal in the transmission process is reduced, and the electromagnetic interference is effectively inhibited; meanwhile, due to the integrated design, the consistency and reliability of element assembly of the switch element can be ensured through high-precision PCB manufacturing and an automatic surface mounting process, and the number of discrete elements and the assembly complexity are effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to inverter technical field, concretely is a kind of inverter PCB board load type switch. BACKGROUND

[0002] Inverter switching element is one of the core components of inverter, switching element is converted into alternating current by high-speed switching action, the performance of switching element directly influences the quality of output alternating current, since switching element generates a large amount of heat when working, so the inverter switching element on the market currently adopts discrete installation or modularization external connection, through discrete installation or modularization design can more flexibly arrange heat dissipation structure, improve the heat dissipation efficiency of switching element;

[0003] However, since the inverter switching element of the present application adopts discrete installation or modularization external connection design, leading to complex circuit layout, high electromagnetic interference risk, and is not conducive to miniaturization and heat dissipation optimization, therefore we need to propose an inverter PCB board load type switch to solve the above problems, so that switching element can be integrated on inverter mainboard, so that switching element and photovoltaic inverter mainboard are integrated;Effectively reduce electromagnetic interference, while effectively reducing the number of discrete components and assembly complexity. SUMMARY

[0004] The utility model discloses a kind of inverter PCB board load type switches, switching element can be integrated on inverter mainboard, so that switching element and photovoltaic inverter mainboard are integrated;Effectively reduce electromagnetic interference, while effectively reducing the number of discrete components and assembly complexity, to solve the problems proposed in background art.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of inverter PCB board load type switch, including the switching element welded on inverter mainboard, the switching element includes switch main body and key cap, the switch main body is installed with the connecting mechanism for pressing switch main body and being used to switch on or disconnect switching element, the key cap is sleeved on connecting mechanism, and ventilation structure is provided between the key cap and connecting mechanism.

[0006] Preferably, the connecting mechanism includes a guide post installed at one end of the switch main body, one end of the guide post is fixed with a plug block for plugging with the key cap, one end of the key cap is provided with a plug slot for inserting the plug block.

[0007] Preferably, the plug block and the guide post are both provided in a cubic structure, and the width of the plug block is less than the width of the guide post.

[0008] Preferably, the one end of the guide post connected with the plug block is integrally formed with a limiting protrusion on the outer wall, one end of the key cap is provided with a circular recess for the limiting protrusion to enter, and the plug slot is communicated with the circular recess.

[0009] Preferably, the ventilation structure comprises a ventilation gap and ventilation grooves, the ventilation gap is located in the middle of the plug, the ventilation grooves are located in the side wall of the slot, and the ventilation grooves are communicated with the ventilation gap when the plug is located in the slot.

[0010] Preferably, a plurality of ventilation grooves are uniformly distributed around the slot.

[0011] Preferably, the key cap is cylindrically arranged, and a gap is left between the end of the plug and the end of the slot when the plug is sleeved on the plug.

[0012] Preferably, a plurality of pins for welding with the inverter main board are arranged on the side of the switch body adjacent to the guide column, and the plurality of pins are arranged in a rectangular array.

[0013] Preferably, two positioning columns for welding with the inverter main board are further mounted on the side of the switch body adjacent to the guide column, and the two positioning columns are located at the two ends of the switch body.

[0014] Preferably, the positioning columns are arranged in a rectangular shape, and the two positioning columns are fixed at diagonally arranged corners of the switch body.

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] 1. The switch element is integrated on the inverter main board, so that the switch element is integrated with the photovoltaic inverter main board, the signal transmission path is significantly shortened, the parasitic inductance and capacitance are greatly reduced, the radiation interference of high-frequency signals in the transmission process is reduced, and the electromagnetic interference is effectively suppressed; meanwhile, the integrated design enables the switch element to be manufactured by high-precision PCB and automatic patching process, ensures the consistency and reliability of element assembly, and effectively reduces the number of discrete elements and assembly complexity.

[0017] 2. The heat generated by the switch element can be dissipated through the ventilation structure by cooperation of the connecting mechanism and the ventilation structure, and the heat dissipation effect of the switch element is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structural schematic view of the utility model;

[0019] Figure 2 It is an explosion structural schematic view of the utility model;

[0020] Figure 3 It is a cross-sectional structural schematic view of the utility model;

[0021] Figure 4 It is a schematic view of the switch element and the inverter main board installation structure of the utility model;

[0022] Figure 5 The utility model discloses an inverter structure schematic diagram of installation switch element.

[0023] In the drawing: 1, switch element;11, switch main body;12, key cap;2, positioning column;3, pin;4, connecting mechanism;41, plug block;42, ventilation gap;43, limiting protrusion;44, guide column;45, slot;46, ventilation groove;5, shell;6, display screen;7, inverter mainboard;8, ventilation net plate. DETAILED DESCRIPTION

[0024] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model and not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0025] Please refer to Figures 1-5 The utility model provides a kind of technical scheme: a kind of inverter PCB board load type switch, including welding on inverter mainboard 7 switch element 1, the switch element 1 including switch main body 11 and key cap 12, the switch main body 11 is equipped with the connecting mechanism 4 for pressing switch main body 11 and the switch element 1 is turned on or disconnected, the key cap 12 is sleeved on connecting mechanism 4, and ventilation structure is provided between the key cap 12 and connecting mechanism 4;

[0026] By integrating switch element 1 on inverter mainboard 7, make switch element 1 and photovoltaic inverter mainboard 7 integral, signal transmission path is significantly shortened, parasitic inductance and capacitance are greatly reduced, reduce the radiation interference of high frequency signal in transmission process, effectively inhibit electromagnetic interference;While integrated design makes switch element 1 can pass through high-precision PCB manufacturing and automatic patch process, ensure the consistency and reliability of element assembly, effectively reduce the number of discrete components and assembly complexity, the heat generated by switch element 1 can be dissipated through ventilation structure through ventilation structure, improve the heat dissipation effect of switch element 1.

[0027] The connecting mechanism 4 includes the guide column 44 installed in one end of the switch main body 11, one end of the guide column 44 is fixed with the plug block 41 for inserting with the key cap 12, one end of the key cap 12 is provided with the slot 45 for inserting the plug block 41, so that the key cap 12 and the switch main body 11 are detachably arranged, facilitate the key cap 12 to lead out the outside of the inverter shell 5, so as to facilitate the user to press manually.

[0028] The plug-in block 41 and the guide pillar 44 are both provided in a cuboid structure, and the width of the plug-in block 41 is smaller than that of the guide pillar 44, so that the key cap 12 cannot rotate under external force after being sleeved on the plug-in block 41, thereby enabling the key cap 12 to move stably when being pressed.

[0029] The guide pillar 44 is integrally formed with a limiting protrusion 43 on the outer wall of one end connected with the plug-in block 41, one end of the key cap 12 is provided with a circular groove for the limiting protrusion 43 to enter, the plug-in groove 45 is in communication with the circular groove, the key cap 12 is provided in a cylindrical shape, and when the key cap 12 is sleeved on the plug-in block 41, a gap is left between the end of the plug-in block 41 and the end of the plug-in groove 45, the limiting protrusion 43 is used to limit the distance of the plug-in block 41 inserted into the plug-in groove 45, so that the end of the plug-in block 41 and the end of the plug-in groove 45 have a gap, which is beneficial to dissipating the heat generated by the switch element 1.

[0030] The ventilation structure includes a ventilation gap 42 and a ventilation groove 46, the ventilation gap 42 is located in the middle of the plug-in block 41, the ventilation groove 46 is located on the side wall of the plug-in groove 45, and the ventilation groove 46 is in communication with the ventilation gap 42 when the plug-in block 41 is located in the plug-in groove 45, the ventilation groove 46 and the ventilation gap 42 are in communication to form a ventilation cavity in the key cap 12 which is in communication with the outside of the key cap 12, thereby facilitating the dissipation of heat of the switch element 1.

[0031] The ventilation groove 46 is provided in a plurality of forms, and the plurality of ventilation grooves 46 are uniformly distributed around the plug-in groove 45, the plurality of ventilation grooves 46 are used to increase the area of the heat dissipation cavity inside the key cap 12, thereby facilitating the circulation of air inside the key cap 12, and thereby accelerating the speed of heat dissipation inside the key cap 12.

[0032] The side of the switch body 11 adjacent to the guide pillar 44 is provided with a plurality of pins 3 for welding with the inverter main board 7, the plurality of pins 3 are arranged in a rectangular array, the plurality of pins 3 are used to facilitate the welding of the switch element 1 and the inverter main board 7 through high-precision PCB manufacturing and automatic patching process, thereby ensuring the consistency and reliability of element assembly, and effectively reducing the number of discrete components and assembly complexity.

[0033] The side of the switch body 11 adjacent to the guide pillar 44 is also provided with two positioning columns 2 for welding with the inverter main board 7, and the two positioning columns 2 are located at the two ends of the switch body 11, the positioning column 2 is provided in a rectangular shape, and the two positioning columns 2 are fixed at the diagonally arranged corners of the switch body 11, the inverter main board 7 is provided with positioning holes matched with the positioning columns 2, and the positioning columns 2 and the positioning holes are inserted and matched, thereby effectively improving the alignment accuracy when the switch element 1 is welded with the inverter main board 7.

[0034] As Figure 5The photovoltaic inverter shown is provided with the switching element 1, the photovoltaic inverter comprises a shell 5 and an inverter mainboard 7 installed inside the shell 5, ventilation mesh plates 8 are installed on opposite sides of the shell 5, a through hole for leading the key cap 12 of the switching element 1 out of the shell 5 is formed on the side of the shell 5 adjacent to the ventilation mesh plate 8, a display screen 6 is installed on the upper surface of the shell 5, and the photovoltaic inverter is turned on or off by pressing the key cap 12.

[0035] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An inverter PCB board-mounted switch comprising a switching element (1) welded on an inverter main board (7), characterized in that: The switch element (1) comprises a switch body (11) and a key cap (12), the switch body (11) is provided with a connecting mechanism (4) for pressing the switch body (11) to turn on or turn off the switch element (1), the key cap (12) is sleeved on the connecting mechanism (4), and a ventilation structure is arranged between the key cap (12) and the connecting mechanism (4).

2. An inverter PCB board mount switch according to claim 1, wherein: The connecting mechanism (4) comprises a guide column (44) mounted at one end of the switch body (11), one end of the guide column (44) is fixedly provided with a plug block (41) for plugging with the key cap (12), and one end of the key cap (12) is provided with a plug groove (45) for inserting the plug block (41).

3. An inverter PCB board mountable switch according to claim 2, characterized in that: The plug block (41) and the guide column (44) are both provided in a cubic structure, and the width of the plug block (41) is smaller than that of the guide column (44).

4. An inverter PCB board mountable switch according to claim 3, characterized in that: The outer wall of one end of the guide column (44) connected with the plug block (41) is integrally formed with a limiting protrusion (43), one end of the key cap (12) is provided with a circular groove for the limiting protrusion (43) to enter, and the plug groove (45) is communicated with the circular groove.

5. An inverter PCB board mountable switch according to claim 4, characterized in that: The ventilation structure comprises a ventilation gap (42) and a ventilation groove (46), the ventilation gap (42) is located in the middle of the plug block (41), the ventilation groove (46) is located in the side wall of the plug groove (45), and the ventilation groove (46) is communicated with the ventilation gap (42) when the plug block (41) is located in the plug groove (45).

6. An inverter PCB board mount switch according to claim 5, wherein: The ventilation groove (46) is provided with a plurality of ventilation grooves (46), and the plurality of ventilation grooves (46) are uniformly distributed around the plug groove (45).

7. An inverter PCB board mount switch according to claim 6, wherein: The key cap (12) is provided in a cylindrical shape, and when the key cap (12) is sleeved on the plug block (41), a gap is left between the end of the plug block (41) and the end of the plug groove (45).

8. An inverter PCB board mount switch according to claim 1, wherein: The side of the switch body (11) adjacent to the guide column (44) is provided with a plurality of pins (3) for welding with the inverter main board (7), and the plurality of pins (3) are arranged in a rectangular array.

9. An inverter PCB board mount switch according to claim 8, wherein: The side of the switch body (11) adjacent to the guide column (44) is also provided with two positioning columns (2) for welding with the inverter main board (7), and the two positioning columns (2) are located at two ends of the switch body (11).

10. An inverter PCB board mount switch according to claim 9, wherein: The positioning column (2) is provided in a rectangular shape, and the two positioning columns (2) are fixed at diagonally arranged corners of the switch body (11).

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