Leading-out sheet connecting structure convenient for automatic welding and solid-state relay

Abstract

The utility model discloses a leading-out sheet connecting structure convenient for automatic welding and a solid-state relay, the leading-out sheet connecting structure comprises a leading-out sheet, a silicon controlled rectifier sheet assembly and a PCB, the leading-out sheet is provided with a weld leg and a pin hole, the weld leg of the leading-out sheet is inserted into a first weld hole correspondingly arranged on the PCB and is welded with the PCB; the silicon controlled rectifier sheet assembly is provided with a first lead-out pin, and the first lead-out pin is inserted into the pin hole of the lead-out sheet and is welded with the lead-out sheet; the penetrating direction of the welding pin is the same as that of the first lead-out pin, and the welding point of the welding pin and the PCB and the welding point of the first lead-out pin and the lead-out sheet are located on the same plane so as to carry out wave soldering at the same time. According to the utility model, the lead-out sheet, the silicon controlled rectifier sheet assembly and the PCB can be simultaneously subjected to wave soldering, so that the welding frequency is reduced, and the problem that the lead-out sheet is difficult to be welded with the silicon controlled rectifier sheet assembly and the PCB by soldering iron is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of relays, in particular to a lead-out piece connection structure and a solid-state relay which are convenient for automatic welding. Background Art

[0002] At present, the lead-out plate of the solid-state relay and the lead-out pin of the thyristor chip assembly in the prior art are generally soldered, and a soldering iron is used to melt the tin bar and solder the two objects to be soldered together to achieve electrical conduction. However, the lead-out plate and the lead-out pin of the thyristor chip assembly are generally made of pure copper or copper alloy. Copper has fast thermal conductivity, and the heat generated by the soldering iron during welding is easily conducted away, resulting in slow heating of the soldering iron or insufficient temperature, so that the tin bar cannot melt quickly to complete the welding, affecting the welding efficiency. In addition, the soldering pin of the lead-out plate needs to be soldered to the PCB board, which requires another soldering, resulting in a large number of soldering times and low production efficiency. Utility Model Content

[0003] The utility model aims at the technical problems existing in the prior art and provides a lead-out piece connection structure and a solid-state relay which are convenient for automatic welding.

[0004] The utility model adopts the following technical scheme to solve the technical problem: a lead-out plate connection structure which is convenient for automatic welding, comprising a lead-out plate, a thyristor chip assembly and a PCB board, wherein the lead-out plate is provided with a soldering foot and a pin hole, the soldering foot of the lead-out plate is inserted into a first soldering hole correspondingly arranged on the PCB board and is welded to the PCB board; the thyristor chip assembly is provided with a first lead-out pin, the first lead-out pin is inserted into the pin hole of the lead-out plate and is welded to the lead-out plate; the insertion direction of the soldering foot is the same as the insertion direction of the first lead-out pin, and the soldering point of the soldering foot and the PCB board and the soldering point of the first lead-out pin and the lead-out plate are on the same plane, so as to perform wave soldering simultaneously.

[0005] Furthermore, the lead-out piece includes a main piece body and a side piece body bent on one side of the main piece body in a direction opposite to the extension direction of the solder leg, the pin hole is arranged on the main piece body and close to the side piece body, and the solder leg is arranged on the side piece body and extends along the insertion direction.

[0006] Furthermore, the side piece is L-shaped, including a first side and a second side, the tail end of the first side is integrally connected to the main piece, the extension direction of the second side is parallel to the main piece, and the welding foot is arranged at the tail end of the second side.

[0007] Furthermore, one side of the main sheet body is flush with the front side of the PCB board; and the thyristor assembly is located on the back side of the PCB board.

[0008] Furthermore, there are multiple first lead pins, which are arranged in parallel; there are multiple lead plates, which correspond one-to-one to the multiple first lead pins.

[0009] Furthermore, the thyristor chip assembly is also provided with two second lead-out pins, which are respectively inserted into two second solder holes correspondingly arranged on the PCB board and welded to the PCB board; the insertion direction of the second lead-out pin is the same as the insertion direction of the first lead-out pin, and the soldering point between the second lead-out pin and the PCB board and the soldering point between the first lead-out pin and the lead-out chip are on the same plane.

[0010] Furthermore, the pin hole is a square hole, and the cross-sectional shape of the first lead pin is adapted to the shape of the pin hole.

[0011] Furthermore, chamfers are provided at opposite ends of the tail of the first lead pin and the tail of the solder pin, respectively, to facilitate insertion.

[0012] The utility model further provides a solid-state relay, comprising the lead-out piece connection structure that is convenient for automatic welding as described in the utility model.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] Since the insertion direction of the solder pin of the lead-out sheet is the same as the insertion direction of the first lead pin of the thyristor chip assembly, and the soldering point of the solder pin of the lead-out sheet and the PCB board and the soldering point of the first lead pin of the thyristor chip assembly and the lead-out sheet are on the same plane, the lead-out sheet, the thyristor chip assembly and the PCB board of the utility model can be wave soldered at the same time, thereby reducing the number of soldering times and solving the problem that the lead-out sheet, the thyristor chip assembly and the PCB board are difficult to solder with a soldering iron.

[0015] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments; however, the lead-out piece connection structure and solid-state relay that are convenient for automated welding of the utility model are not limited to the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the lead-out piece of the utility model;

[0017] Figure 2 It is a three-dimensional structural schematic diagram of the lead-out sheet and the thyristor sheet assembly of the utility model in the assembled state;

[0018] Figure 3 It is a three-dimensional structural schematic diagram of the lead-out sheet and the PCB board of the utility model in a combined state;

[0019] Figure 4It is a three-dimensional structural schematic diagram of the lead-out sheet, the thyristor sheet assembly and the PCB board of the utility model in a combined state;

[0020] In the figure, 1, lead-out sheet, 11, main sheet body, 111, pin hole, 12, side sheet body, 121, solder pin, 2, thyristor assembly, 21, first lead-out pin, 22, second lead-out pin, 3, PCB board, 31, first solder hole, 32, second solder hole. DETAILED DESCRIPTION

[0021] In this utility model, the terms "first", "second", etc. are only used to distinguish similar objects, not to describe a specific order or sequence, and cannot be understood as indicating or implying relative importance. In addition, in the description of this utility model, unless otherwise specified, "plurality" means two or more. Please refer to Figure 1-Figure 4 As shown, a lead-out plate connection structure of the utility model that is convenient for automated welding includes a lead-out plate 1, a thyristor chip assembly 2 and a PCB board 3. The lead-out plate 1 is provided with a soldering foot 121 and a pin hole 111. The soldering foot 121 of the lead-out plate 1 is inserted into the first soldering hole 31 correspondingly provided on the PCB board 3 and is welded to the PCB board 3. The thyristor chip assembly 2 is provided with a first lead-out pin 21, which is inserted into the pin hole 111 of the lead-out plate 1 and is welded to the lead-out plate 1. The insertion direction of the soldering foot 121 is the same as the insertion direction of the first lead-out pin 21, and the soldering point of the soldering foot 121 and the PCB board 3 and the soldering point of the first lead-out pin 21 and the lead-out plate 1 are on the same plane, so as to perform wave soldering at the same time. The insertion direction of the soldering foot 121 refers to the direction in which the soldering foot 121 penetrates into the first soldering hole 31 of the PCB board 3, and the insertion direction of the first lead-out pin 21 refers to the direction in which the first lead-out pin 21 penetrates into the pin hole 111 of the lead-out plate 1. In order to facilitate insertion, chamfers are provided at opposite ends of the tail of the first lead pin 21 and the tail of the solder pin 121 for guidance.

[0022] like Figure 1 As shown, the lead-out sheet 1 includes a main sheet body 11 in a flat sheet structure and a side sheet body 12 bent on one side of the main sheet body 11 in a direction opposite to the extension direction of the solder pin 121. The pin hole 111 is provided in the main sheet body 11 and is close to the side sheet body 12. The solder pin 121 is provided in the side sheet body 12 and extends in the insertion direction. The pin hole 111 is a square hole, and the cross-sectional shape of the first lead pin 21 is adapted to the shape of the pin hole 111. The side sheet body 12 is roughly L-shaped, including a first side and a second side, and the tail end of the first side is integrally connected to the main sheet body 11. The extension direction of the second side is parallel to the main sheet body 11 and is the same as the length direction of the square pin hole 111. The solder pin 121 is provided at the tail end of the second side of the side sheet body 12.

[0023] The number of the first lead pins 21 is multiple, and the multiple first lead pins 21 are arranged in parallel; the number of lead plates 1 is also multiple, and the multiple lead plates 1 correspond to the multiple first lead pins 21 one by one. Specifically, in this embodiment, the number of the first lead pins 21 and the number of the lead plates 1 are two respectively, but it is not limited to this. In other embodiments, the number of the first lead pins and the number of the lead plates are four respectively.

[0024] In this embodiment, the thyristor chip assembly 2 is further provided with two second lead pins 22, which are respectively inserted into two second solder holes 32 correspondingly provided on the PCB board 3 and soldered to the PCB board 3. The insertion direction of the second lead pin 22 is the same as the insertion direction of the first lead pin 21, and the solder joints of the second lead pin 22 and the PCB board 3 and the solder joints of the first lead pin 21 and the lead sheet 1 are on the same plane, so as to facilitate simultaneous wave soldering. The cross section of the second lead pin 22 is cylindrical, and the shape of the second solder hole 32 is adapted to the shape of the second lead pin 22.

[0025] like Figure 4 As shown, one side of the main chip body 11 is flush with the front side of the PCB board 3 , and the thyristor chip assembly 2 is located on the back side of the PCB board 3 .

[0026] The utility model discloses a lead-out plate connection structure which is convenient for automatic welding. The lead-out plate 1, the thyristor chip component 2 and the PCB board 3 can be wave-soldered at the same time, and only needs to be welded once in total, which greatly reduces the number of welding times and solves the problem that the lead-out plate 1, the thyristor chip component 2 and the PCB board 3 are difficult to weld with a soldering iron.

[0027] A solid-state relay of the utility model comprises the lead-out piece connection structure of the utility model which is convenient for automatic welding.

[0028] The utility model provides a solid-state relay, and the unrelated parts are the same as those in the prior art or can be implemented by using the prior art.

[0029] The above embodiments are only used to further illustrate a lead-out plate connection structure and a solid-state relay that are convenient for automated welding of the present invention, but the present invention is not limited to the embodiments. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention fall within the protection scope of the technical solution of the present invention.

Claims

1. A lead-out plate connection structure convenient for automated welding, comprising a lead-out plate, a thyristor chip assembly and a PCB board, wherein the lead-out plate is provided with a soldering foot and a pin hole, the soldering foot of the lead-out plate is inserted into a first soldering hole correspondingly provided on the PCB board and is welded to the PCB board; the thyristor chip assembly is provided with a first lead-out pin, the first lead-out pin is inserted into the pin hole of the lead-out plate and is welded to the lead-out plate; characterized in that: The insertion direction of the solder pin is the same as that of the first lead pin, and the solder joints between the solder pin and the PCB board and the solder joints between the first lead pin and the lead sheet are on the same plane so that wave soldering can be performed simultaneously.

2. The lead-out plate connection structure that is convenient for automated welding according to claim 1, characterized in that: The lead-out piece includes a main piece body and a side piece body bent on one side of the main piece body in a direction opposite to the extension direction of the solder leg. The pin hole is arranged on the main piece body and close to the side piece body. The solder leg is arranged on the side piece body and extends along the insertion direction.

3. The lead-out plate connection structure convenient for automated welding according to claim 2, characterized in that: The side piece is L-shaped and includes a first side and a second side. The tail end of the first side is integrally connected to the main piece. The extension direction of the second side is parallel to the main piece. The welding foot is arranged at the tail end of the second side.

4. The lead-out plate connection structure for facilitating automated welding according to claim 2, characterized in that: One side of the main sheet body is flush with the front side of the PCB board; the thyristor assembly is located on the back side of the PCB board.

5. The lead-out plate connection structure convenient for automated welding according to claim 1, characterized in that: There are multiple first lead pins, which are arranged in parallel; there are multiple lead plates, which correspond to the multiple first lead pins one by one.

6. The lead-out plate connection structure convenient for automated welding according to claim 1, characterized in that: The thyristor chip assembly is also provided with two second lead pins, which are respectively inserted into two second solder holes correspondingly arranged on the PCB board and welded to the PCB board; the insertion direction of the second lead pins is the same as the insertion direction of the first lead pins, and the soldering point between the second lead pin and the PCB board and the soldering point between the first lead pin and the lead sheet are on the same plane.

7. The lead-out plate connection structure convenient for automated welding according to claim 1, characterized in that: The pin hole is a square hole, and the cross-sectional shape of the first lead pin matches the shape of the pin hole.

8. The lead-out plate connection structure convenient for automated welding according to claim 1, characterized in that: The tail of the first lead pin and the tail of the solder pin are respectively provided with chamfers at two opposite ends to facilitate insertion.

9. A solid-state relay, characterized in that: The invention comprises a lead-out plate connection structure as claimed in any one of claims 1 to 8 and is convenient for automated welding.

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