A plug-in protection structure for connecting a plug-in terminal to a PCB board

Abstract

The invention discloses a plug-in protection structure for connecting a plug-in terminal with a PCB board, comprising a PCB board, on which at least a power terminal plug-in part and a switch element plug-in part are arranged; the power terminal plug-in part comprises an input plug-in part, an input common terminal plug-in part, an output common terminal plug-in part and an output plug-in part; the switch element plug-in part comprises a switch input plug-in part and a switch output plug-in part; the plug pins of the power plug-in terminal are respectively plugged with the input plug-in part, the input common terminal plug-in part, the output common terminal plug-in part and the output plug-in part, and the plug pins of the power plug-in terminal are provided with a wave soldering tinning layer at each plug-in place; the plug pins of the switch element are respectively plugged with the switch input plug-in part and the switch output plug-in part, and the plug pins of the switch element are provided with a wave soldering tinning layer at each plug-in place. The invention can carry a larger current, and the wave soldering can effectively improve the production efficiency and production quality of the product and save labor.

Description

Technical Field

[0001] The invention belongs to the technical field of switch circuit boards, and in particular relates to a plug-in protection structure for connecting a plug-in terminal with a PCB board. Background Art

[0002] In the field of remote control switches, users control high-power electrical appliances by using a remote control switch connected to an AC contactor to power on and off high-power electrical appliances. This method has some potential dangers. For example, when using an AC contactor to control water pumping, it is usually exposed to the outside, which can easily cause leakage or electric shock accidents. It is particularly important to design a high-power remote control switch. The high-power remote control switch is integrated on the PCB circuit board. The required components, especially the power plug terminals, are connected to the PCB board. In order to be able to adapt to the high-power power supply current, the traditional method of opening a window to tin and add copper wire is to increase the current carrying capacity. Manual welding is the only option, and wave soldering is not possible, resulting in low production efficiency and inconvenience in production. Summary of the invention

[0003] In view of the deficiencies described in the above-mentioned prior art, the present invention provides a plug-in protection structure for connecting a plug-in terminal to a PCB board, wherein copper sheets are laid on the PCB and the copper sheets are protected by soldering, and wave soldering can be performed at the plug-in point after the components are plugged in, thereby greatly improving processing efficiency and production quality.

[0004] The technical solution adopted by the present invention is:

[0005] A connection structure for connecting a power plug terminal to a PCB board, comprising a PCB board, on which at least a power terminal plug part and a switch element plug part are provided; the power terminal plug part comprises an input plug part, an input common end plug part, an output common end plug part and an output plug part; the switch element plug part comprises a switch input plug part and a switch output plug part.

[0006] The input plug-in part is insulated and isolated from the input common terminal plug-in part; the back side of the input plug-in part is connected to the back side of the switch input plug-in part through a first electrical structure; the first electrical structure includes an input conductive copper sheet and an input tin-plated layer, the input conductive copper sheet directly contacts the back side of the PCB board and connects the back side of the input plug-in part to the switch input plug-in part, the input tin-plated layer is located on the input conductive copper sheet and covers the input conductive copper sheet; the thickness of the input conductive copper sheet is 1 mm.

[0007] The input plug part is provided with an input plug hole at the first electrical structure, and the hole wall of the input plug hole is provided with a copper plating layer I and a tin plating layer I, the tin plating layer I covers the copper plating layer I and the tin plating layer I is connected to the input tin plating layer of the first electrical structure; the adjacent input plug holes are electrically connected; and a tin plating layer I' is provided at the outer edge of the input plug hole located on the front of the PCB board, and the tin plating layer I' is connected to the tin plating layer I. The input plug hole connects the front and back of the PCB board, and after the input pin of the power plug terminal is inserted, wave soldering is performed on the input tin plating layer of the first electrical connection to solder the power plug terminal to the PCB board.

[0008] The back side of the input common terminal connector and the back side of the output common terminal connector are connected via a second electrical structure; the second electrical structure comprises a common terminal conductive copper sheet and a common terminal tin-plated layer, the common terminal conductive copper sheet is in direct contact with the back side of the PCB board and connects the back side of the input common terminal connector and the back side of the output common terminal connector together, the common terminal tin-plated layer is located on the common terminal conductive copper sheet and covers the common terminal conductive copper sheet; the thickness of the common terminal conductive copper sheet is 1 mm.

[0009] The input common terminal plug-in portion is provided with an input common terminal plug-in hole at the second electrical structure, and the hole wall of the input common terminal plug-in hole is provided with a copper-plated layer II and a tin-plated layer II, the tin-plated layer II covers the copper-plated layer II and the tin-plated layer II is connected to the common terminal tin-plated layer of the second electrical structure; the adjacent input common terminal plug-in holes are electrically connected; and the outer edge of the input common terminal plug-in hole located on the front of the PCB board is provided with a tin-plated layer II', and the tin-plated layer II' is connected to the tin-plated layer II. The input common terminal plug-in hole connects the front and back of the PCB board, and after the input common terminal pin of the power plug-in terminal is inserted, wave soldering is performed on the common terminal tin-plated layer of the second electrical connection, and the power plug-in terminal is soldered to the PCB board.

[0010] The output common terminal plug-in portion is provided with an output common terminal plug-in hole at the second electrical structure, and the hole wall of the output common terminal plug-in hole is provided with a copper-plated layer III and a tin-plated layer III, the tin-plated layer III covers the copper-plated layer III and the tin-plated layer III is connected to the common terminal tin-plated layer of the second electrical structure; the adjacent output common terminal plug-in holes are electrically connected; and a tin-plated layer III' is provided at the outer edge of the output common terminal plug-in hole located on the front side of the PCB board, and the tin-plated layer III' is connected to the tin-plated layer III. The output common terminal plug-in hole connects the front and back sides of the PCB board, and after the output common terminal pin of the power plug-in terminal is inserted, wave soldering is performed on the common terminal tin-plated layer of the second electrical connection, and the power plug-in terminal is soldered to the PCB board.

[0011] The output common terminal plug-in part is insulated and isolated from the output plug-in part; the back side of the output plug-in part is connected to the back side of the switch output plug-in part through a third electrical structure; the third electrical structure includes an output conductive copper sheet and an output tin-plated layer, the output conductive copper sheet directly contacts the back side of the PCB board and connects the back side of the output plug-in part to the back side of the switch output plug-in part, the output tin-plated layer is located on the output conductive copper sheet and covers the output conductive copper sheet; the thickness of the output conductive copper sheet is 1 mm.

[0012] The output plug-in portion is provided with an output plug-in hole at the third electrical structure, and the hole wall of the output plug-in hole is provided with a copper-plated layer IV and a tin-plated layer IV, the tin-plated layer IV covers the copper-plated layer IV and the tin-plated layer IV is connected to the output tin-plated layer of the third electrical structure; the adjacent output common-end plug-in holes are electrically connected; and a tin-plated layer IV' is provided on the outer edge of the output common-end plug-in hole located on the front of the PCB board, and the tin-plated layer IV' is connected to the tin-plated layer IV. The output common-end plug-in hole connects the front and back of the PCB board, and after the output pin of the power plug-in terminal is inserted, wave soldering is performed on the output tin-plated layer of the third electrical connection to solder the power plug-in terminal to the PCB board.

[0013] The switch input plug part and the switch output plug part are insulated and isolated; and the switch input plug part is provided with a switch input plug hole at the first electrical structure, and the hole wall of the switch input plug hole is provided with a copper plated layer V and a tin plated layer V, the tin plated layer V covers the copper plated layer V and the tin plated layer V is connected to the input tin plated layer of the first electrical structure; and the switch input plug hole is provided with a tin plated layer V' on the outer edge of the front of the PCB board; the tin plated layer V' is connected to the tin plated layer V. The switch input plug hole connects the front and back of the PCB board, and after the input pin of the switch element is inserted, wave soldering is performed on the input tin plated layer of the first electrical connection to solder the switch element to the PCB board.

[0014] The switch output plug-in portion is provided with a switch output plug-in hole at the third electrical structure; the hole wall of the switch output plug-in hole is provided with a copper-plated layer VI and a tin-plated layer VI, the tin-plated layer VI covers the copper-plated layer VI and the tin-plated layer VI is connected to the output tin-plated layer of the third electrical structure; and the outer edge of the switch output plug-in hole located on the front of the PCB board is provided with a tin-plated layer VI'; the tin-plated layer VI' is connected to the tin-plated layer VI. The switch output plug-in hole connects the front and back of the PCB board, and after the output pin of the switch element is inserted, wave soldering is performed on the input tin-plated layer of the third electrical connection to solder the switch element to the PCB board. The switch element used in the present invention is a magnetic latching relay.

[0015] After the input pin of the power plug terminal is inserted into the plug hole, the input pin of the power plug terminal is short-circuited with the input pin of the switch element under the action of the first electrical structure; the input common terminal pin and the output common terminal pin of the power plug terminal are short-circuited under the action of the second electrical structure, and the output pin of the power plug terminal is short-circuited with the output pin of the switch element under the action of the third electrical structure.

[0016] The present invention has three electrical structures on the back of the PCB, each of which has a 1mm thick conductive copper sheet to improve the current carrying capacity, and tin is plated on the conductive copper sheet to protect the conductive copper sheet. The width of the tinned layer is greater than the conductive copper sheet, so that the tinned layer has a welding position at the terminal insertion position, which can also save labor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a structural schematic diagram of the present invention.

[0019] Figure 2 This is a structural schematic diagram in which the PCB board is omitted in the present invention. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Example:

[0022] A connection structure for connecting a power plug terminal and a PCB board, such as Figure 1 and 2 As shown, it includes a PCB board 1, on which at least a power terminal plug-in part 2 and a switch element plug-in part are provided; the power terminal plug-in part 2 includes an input plug-in part 21, an input common terminal plug-in part 22, an output common terminal plug-in part 23 and an output plug-in part 24; the switch element plug-in part includes a switch input plug-in part 31 and a switch output plug-in part 32.

[0023] The input plug-in part 21 is insulated and isolated from the input common terminal plug-in part 22; the back side of the input plug-in part 21 is connected to the back side of the switch input plug-in part 31 through a first electrical structure; the first electrical structure includes an input conductive copper sheet 41 and an input tin-plated layer 42, the input conductive copper sheet directly contacts the back side of the PCB board and connects the back side of the input plug-in part 21 to the switch input plug-in part 31, the input tin-plated layer is located on the input conductive copper sheet and covers the input conductive copper sheet; the thickness of the input conductive copper sheet is 1 mm.

[0024] The input plug part 21 is provided with an input plug hole 211 at the first electrical structure, and the hole wall of the input plug hole 211 is provided with a copper plating layer I and a tin plating layer I, the tin plating layer I covers the copper plating layer I and the tin plating layer I is connected to the input tin plating layer of the first electrical structure; adjacent input plug holes 211 are electrically connected; and a tin plating layer I' is provided at the outer edge of the input plug hole 211 located on the front of the PCB board, and the tin plating layer I' is connected to the tin plating layer I. The input plug hole 211 connects the front and back of the PCB board, and after the input pin of the power plug terminal is inserted, wave soldering is performed on the input tin plating layer of the first electrical connection to solder the power plug terminal to the PCB board.

[0025] The back side of the input common terminal connector 22 and the back side of the output common terminal connector 23 are connected via a second electrical structure; the second electrical structure comprises a common terminal conductive copper sheet 51 and a common terminal tin-plated layer 52; the common terminal conductive copper sheet directly contacts the back side of the PCB board and connects the back side of the input common terminal connector 22 and the back side of the output common terminal connector 23 together; the common terminal tin-plated layer is located on the common terminal conductive copper sheet and covers the common terminal conductive copper sheet; the thickness of the common terminal conductive copper sheet is 1 mm.

[0026] The input common terminal plug-in portion 22 is provided with an input common terminal plug-in hole 221 at the second electrical structure, and the hole wall of the input common terminal plug-in hole 221 is provided with a copper-plated layer II and a tin-plated layer II, the tin-plated layer II covers the copper-plated layer II and the tin-plated layer II is connected to the common terminal tin-plated layer of the second electrical structure; adjacent input common terminal plug-in holes 221 are electrically connected; and a tin-plated layer II' is provided at the outer edge of the input common terminal plug-in hole 221 located on the front of the PCB board, and the tin-plated layer II' is connected to the tin-plated layer II. The input common terminal plug-in hole 221 connects the front and back of the PCB board, and after the input common terminal pin of the power plug-in terminal is inserted, wave soldering is performed on the common terminal tin-plated layer of the second electrical connection to solder the power plug-in terminal to the PCB board.

[0027] The output common terminal plug-in portion 23 is provided with an output common terminal plug-in hole 231 at the second electrical structure, and the hole wall of the output common terminal plug-in hole 231 is provided with a copper-plated layer III and a tin-plated layer III, the tin-plated layer III covers the copper-plated layer III and the tin-plated layer III is connected to the common terminal tin-plated layer of the second electrical structure; the adjacent output common terminal plug-in holes 231 are electrically connected; and a tin-plated layer III' is provided on the outer edge of the output common terminal plug-in hole 231 located on the front of the PCB board, and the tin-plated layer III' is connected to the tin-plated layer III. The output common terminal plug-in hole 231 connects the front and back of the PCB board, and after the output common terminal pin of the power plug-in terminal is inserted, wave soldering is performed on the common terminal tin-plated layer of the second electrical connection to solder the power plug-in terminal to the PCB board.

[0028] The output common terminal plug-in part 23 is insulated and isolated from the output plug-in part 24; the back side of the output plug-in part 24 is connected to the back side of the switch output plug-in part 32 through a third electrical structure; the third electrical structure includes an output conductive copper sheet 61 and an output tin-plated layer 62, the output conductive copper sheet directly contacts the back side of the PCB board and connects the back side of the output plug-in part 24 to the back side of the switch output plug-in part 32, the output tin-plated layer is located on the output conductive copper sheet and covers the output conductive copper sheet; the thickness of the output conductive copper sheet is 1 mm.

[0029] The output plug-in portion 24 is provided with an output plug-in hole 241 at the third electrical structure, and the hole wall of the output plug-in hole 241 is provided with a copper-plated layer IV and a tin-plated layer IV, the tin-plated layer IV covers the copper-plated layer IV and the tin-plated layer IV is connected to the output tin-plated layer of the third electrical structure; the adjacent output common-end plug-in holes 241 are electrically connected; and a tin-plated layer IV' is provided on the outer edge of the output common-end plug-in hole 241 located on the front of the PCB board, and the tin-plated layer IV' is connected to the tin-plated layer IV. The output common-end plug-in hole 241 connects the front and back of the PCB board, and after the output pin of the power plug-in terminal is inserted, wave soldering is performed on the output tin-plated layer of the third electrical connection to solder the power plug-in terminal to the PCB board.

[0030] The switch input plug part 31 and the switch output plug part 32 are insulated and isolated; and the switch input plug part 31 is provided with a switch input plug hole 311 at the first electrical structure, and the hole wall of the switch input plug hole 311 is provided with a copper plating layer V and a tin plating layer V, the tin plating layer V covers the copper plating layer V and the tin plating layer V is connected to the input tin plating layer of the first electrical structure; and the switch input plug hole 311 is provided with a tin plating layer V' on the outer edge of the front of the PCB board; the tin plating layer V' is connected to the tin plating layer V. The switch input plug hole 311 connects the front and back of the PCB board, and after the input pin of the switch element is inserted, wave soldering is performed on the input tin plating layer of the first electrical connection to solder the switch element to the PCB board.

[0031] The switch output plug part 32 is provided with a switch output plug hole 321 at the third electrical structure; the hole wall of the switch output plug hole 321 is provided with a copper-plated layer VI and a tin-plated layer VI, the tin-plated layer VI covers the copper-plated layer VI and the tin-plated layer VI is connected to the output tin-plated layer of the third electrical structure; and the outer edge of the switch output plug hole 321 located on the front of the PCB board is provided with a tin-plated layer VI'; the tin-plated layer VI' is connected to the tin-plated layer VI. The switch output plug hole 321 connects the front and back of the PCB board, and after the output pin of the switch element is inserted, wave soldering is performed on the input tin-plated layer of the third electrical connection to solder the switch element to the PCB board. The switch element used in the present invention is a magnetic latching relay.

[0032] After the input pin of the power plug terminal is inserted into the plug hole, the input pin of the power plug terminal is short-circuited with the input pin of the switch element under the action of the first electrical structure; the input common pin and the output common pin of the power plug terminal are short-circuited under the action of the second electrical structure, and the output pin of the power plug terminal is short-circuited with the output pin of the switch element under the action of the third electrical structure.

[0033] The 220V voltage is connected between the insertion socket and the input common end socket through the power plug terminal, the load is connected between the output common end socket and the output socket through the power plug terminal, and the switch input socket and the switch output socket are connected through a magnetic latching relay, and are the normally open contacts of the magnetic latching relay.

[0034] When not working: the magnetic latching relay pin between the switch input socket and the switch output socket is in the normally open state, there is no voltage output between the terminals between the output common socket and the output socket, and the load does not work.

[0035] When working: The magnetic latching relay pin between the switch input socket and the switch output socket is in a closed state, the terminal between the output common socket and the output socket outputs a 220V voltage, and the load is powered and works.

[0036] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0037] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A plug-in protection structure for connecting a plug-in terminal to a PCB board, comprising a PCB board (1), characterized in that: At least a power terminal plug-in portion (2) and a switch element plug-in portion are provided on the PCB board (1); the power terminal plug-in portion (2) comprises an input plug-in portion (21), an input common terminal plug-in portion (22), an output common terminal plug-in portion (23) and an output plug-in portion (24); the switch element plug-in portion comprises a switch input plug-in portion (31) and a switch output plug-in portion (32); the input plug-in portion (21) is insulated from the input common terminal plug-in portion (22); the back surface of the input plug-in portion (21) is connected to the back surface of the switch input plug-in portion (31) via a first electrical structure; the back surface of the input common terminal plug-in portion (22) is connected to the back surface of the output common terminal plug-in portion (23) via a second electrical structure; The output common terminal plug part (23) is insulated and isolated from the output plug part (24); the back side of the output plug part (24) is connected to the back side of the switch output plug part (32) via a third electrical structure; the switch input plug part (31) and the switch output plug part (32) are insulated and isolated; the plug pins of the power plug terminal are respectively plugged into the input plug part (21), the input common terminal plug part (22), the output common terminal plug part (23) and the output plug part (24), and the plug pins of the power plug terminal are provided with a wave soldering tinning layer at each plugging location; the plug pins of the switch element are respectively plugged into the switch input plug part (31) and the switch output plug part (32), and the plug pins of the switch element are provided with a wave soldering tinning layer at each plugging location; The first electrical structure comprises an input conductive copper sheet (41) and an input tinned layer (42), the input conductive copper sheet directly contacts the back side of the PCB board and connects the back side of the input plug-in portion (21) to the switch input plug-in portion (31), and the input tinned layer is located on the input conductive copper sheet and covers the input conductive copper sheet; The second electrical structure comprises a common-end conductive copper sheet (51) and a common-end tin-plated layer (52), the common-end conductive copper sheet directly contacts the back side of the PCB board and connects the back side of the input common-end plug-in portion (22) and the back side of the output common-end plug-in portion (23), and the common-end tin-plated layer is located on the common-end conductive copper sheet and covers the common-end conductive copper sheet; The third electrical structure comprises an output conductive copper sheet (61) and an output tin-plated layer (62), wherein the output conductive copper sheet directly contacts the back side of the PCB board and connects the back side of the output plug-in portion (24) and the back side of the switch output plug-in portion (32), and the output tin-plated layer is located on the output conductive copper sheet and covers the output conductive copper sheet.

2. The plug-in protection structure for connecting a plug-in terminal to a PCB board according to claim 1, characterized in that: The input plug-in portion (21) is provided with an input plug-in hole (211) at the first electrical structure, and the hole wall of the input plug-in hole (211) is provided with a copper-plated layer I and a tin-plated layer I, the tin-plated layer I covers the copper-plated layer I, and the tin-plated layer I is connected to the input tin-plated layer of the first electrical structure.

3. The plug-in protection structure for connecting a plug-in terminal to a PCB board according to claim 2, characterized in that: The switch input plug portion (31) is provided with a switch input plug hole (311) at the first electrical structure, and the hole wall of the switch input plug hole (311) is provided with a copper plating layer V and a tin plating layer V, the tin plating layer V covers the copper plating layer V, and the tin plating layer V is connected to the input tin plating layer of the first electrical structure.

4. The plug-in protection structure for connecting a plug-in terminal to a PCB board according to claim 2, characterized in that: The input common terminal plug-in portion (22) is provided with an input common terminal plug-in hole (221) at the second electrical structure, and the hole wall of the input common terminal plug-in hole (221) is provided with a copper-plated layer II and a tin-plated layer II, the tin-plated layer II covers the copper-plated layer II, and the tin-plated layer II is connected to the common terminal tin-plated layer of the second electrical structure.

5. The plug-in protection structure for connecting a plug-in terminal to a PCB board according to claim 4, characterized in that: The output common terminal plug-in portion (23) is provided with an output common terminal plug-in hole (231) at the second electrical structure, and the hole wall of the output common terminal plug-in hole (231) is provided with a copper-plated layer III and a tin-plated layer III, the tin-plated layer III covers the copper-plated layer III, and the tin-plated layer III is connected to the common terminal tin-plated layer of the second electrical structure.

6. The plug-in protection structure for connecting a plug-in terminal to a PCB board according to claim 1, characterized in that: The output plug-in portion (24) is provided with an output plug-in hole (241) at the third electrical structure, and the hole wall of the output plug-in hole (241) is provided with a copper-plated layer IV and a tin-plated layer IV, the tin-plated layer IV covers the copper-plated layer IV, and the tin-plated layer IV is connected to the output tin-plated layer of the third electrical structure.

7. The plug-in protection structure for connecting a plug-in terminal to a PCB board according to claim 1, characterized in that: The switch output plug-in portion (32) is provided with a switch output plug-in hole (321) at the third electrical structure; the hole wall of the switch output plug-in hole (321) is provided with a copper-plated layer VI and a tin-plated layer VI, the tin-plated layer VI covers the copper-plated layer VI, and the tin-plated layer VI is connected to the output tin-plated layer of the third electrical structure.

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