CN218959201U

CN218959201U - Metal spring plate structure welded on PCB through SMT

Info

Publication number: CN218959201U
Application number: CN202223299183.0U
Authority: CN
Inventors: 陈忠友; 袁晶; 刘道学
Original assignee: Junsheng Technology Yangzhou Co ltd
Current assignee: Junsheng Technology Yangzhou Co ltd
Priority date: 2022-12-09
Filing date: 2022-12-09
Publication date: 2023-05-02
Anticipated expiration: 2032-12-09

Abstract

The utility model discloses a metal spring plate structure which can be welded on a PCB (printed circuit board) through SMT (surface mount technology), comprising a metal spring plate body, wherein the metal spring plate comprises four welding legs, three positioning legs and two spring fingers; the bottoms of the four welding legs are on the same plane, and the lowest point of the two elastic fingers does not exceed the plane of the welding leg; the four welding legs comprise a welding leg I, a welding leg II, a welding leg III and a welding leg IV; one of the three positioning pins is arranged between the first welding pin and the second welding pin, one end of the other two positioning pins is connected with the third welding pin and the fourth welding pin, and the other end of the other positioning pin is inserted into a corresponding positioning hole on the PCB. The utility model can improve the welding efficiency, save the cost and improve the welding reliability.

Description

Metal spring plate structure welded on PCB through SMT

Technical Field

The utility model relates to the technical field of household electronics, in particular to a metal spring plate structure which can be welded on a PCB through SMT.

Background

With the increase of the complexity of electronic products, more and more components are used, hundreds of thousands of components are used for some electronic products, the number of welding spots is thousands, and one bad welding spot can influence the reliability of the whole product; in the prior art, compared with the common welding method, the SMT welding (Surface Mounting Technology) surface mounting technology improves the welding efficiency and saves the cost; however, when the technology is used, the common metal spring plate can have the problems of positioning and poor contact with the contact of the PCB.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provide the metal spring plate structure which can be welded on a PCB through SMT, so that the welding efficiency can be improved, the cost can be saved, and the welding reliability can be improved.

The purpose of the utility model is realized in the following way: the metal spring plate structure capable of being welded on a PCB through SMT comprises a metal spring plate body, wherein the metal spring plate comprises four welding legs, three positioning legs and two spring fingers; the bottoms of the four welding legs are on the same plane, and the lowest points of the two elastic fingers do not exceed the plane of the welding legs; the four welding legs comprise a welding leg I, a welding leg II, a welding leg III and a welding leg IV; one of the three positioning pins is arranged between the first welding pin and the second welding pin, one end of the other two positioning pins is connected with the third welding pin and the fourth welding pin, and the other end of the other positioning pin is inserted into a corresponding positioning hole on the PCB.

Compared with the prior art, the utility model adopts the technical scheme and has the beneficial effects that: the metal spring plate is provided with four welding pins, and the metal spring plate can be stably placed on the PCB before SMT welding on the same plane, and the three positioning pins are inserted into corresponding holes on the PCB to play roles in fool-proofing and positioning; the lowest point of the two spring fingers does not exceed the plane of the welding leg, so that the metal spring sheet is ensured to be stably placed on the PCB before welding; the metal spring plate structure effectively solves the positioning problem on the PCB and the reliability problem of contact with the contact on the PCB; the efficiency is higher in the later stage when welding, and the welding effect is better, has improved product quality.

In order to play a role in fixing or circuit connection, the four soldering legs are welded on the corresponding four soldering pads on the PCB.

In order to play roles in fool-proofing and positioning, the three positioning pins are inserted into corresponding positioning holes on the PCB.

In order to communicate with the relevant circuit, the two fingers are in contact with contacts on the PCB.

Furthermore, the metal spring plate is made of phosphor bronze nickel plating materials.

Drawings

Fig. 1 is a schematic perspective view of the present utility model.

Fig. 2 is a schematic diagram of the structure of the present utility model.

Fig. 3 is a diagram of the assembly relationship of the present utility model with a PCB board.

Fig. 4 is a cross-sectional view of the present utility model assembled with a bottom chassis.

Fig. 5 is an enlarged view of part of the utility model at a.

The metal shell comprises a metal shell body 1, a welding leg 2, a welding leg 1, a welding leg 2-2, a welding leg 3-2, a welding leg 4-2, a positioning leg 3, a spring finger 4, a PCB 5, a bonding pad 6, a positioning hole 7, a contact 8, a bottom shell 9 and a bone 10.

Detailed Description

The metal spring plate structure which can be welded on a PCB through SMT as shown in fig. 1-2 comprises a metal spring plate body, wherein the metal spring plate 1 comprises four welding legs 2, three positioning legs 3 and two spring fingers 4; the bottoms of the four welding legs 2 are on the same plane, and the lowest point of the two spring fingers 4 does not exceed the plane of the welding leg 2; the four welding legs 3 comprise a welding leg one 2-1, a welding leg two 2-2, a welding leg three 2-3 and a welding leg four 2-4; one of the three positioning pins 3 is arranged between the first welding pin 2-1 and the second welding pin 2-2, one end of the other two positioning pins is connected with the third welding pin 2-3 and the fourth welding pin 2-4, and the other end is inserted into a corresponding positioning hole 7 on the PCB 5; the metal spring plate 1 is made of phosphor bronze nickel plating material.

As shown in fig. 3, four fillets 2 are soldered on corresponding four pads 6 on the PCB 5; the three positioning pins 3 are inserted into corresponding positioning holes 7 on the PCB 5; the two spring fingers 4 are contacted with the contacts 8 on the PCB 5; the contacts 8 on the PCB 5 need to be gold plated and the contacts 8 oxidize during long term use, resulting in contact failure.

When the utility model works, before SMT welding, four welding pins 2 of a metal spring plate 1 are stably placed on a PCB 5, and three positioning pins 3 are inserted into corresponding positioning holes 7 on the PCB 5 to play roles in fool-proofing and positioning, and two spring fingers 4 of the metal spring plate 1 are contacted with two contacts 8 on the PCB 5 to communicate with related circuits; as shown in fig. 4-5, after the metal spring plate 1 is installed in the bottom shell 9 of the remote controller, the two spring fingers 4 of the metal spring plate 1 are pressed by the bone 10 on the bottom shell 9, so as to ensure the reliability of contact.

The utility model is not limited to the above embodiments, and based on the technical solution disclosed in the utility model, a person skilled in the art may make some substitutions and modifications to some technical features thereof without creative effort according to the technical content disclosed, and all the substitutions and modifications are within the protection scope of the utility model.

Claims

1. The metal spring plate structure capable of being welded on the PCB through SMT is characterized by comprising a metal spring plate body, wherein the metal spring plate comprises four welding legs, three positioning legs and two spring fingers; the bottoms of the four welding legs are on the same plane, and the lowest points of the two elastic fingers do not exceed the plane of the welding legs; the four welding legs comprise a welding leg I, a welding leg II, a welding leg III and a welding leg IV; one of the three positioning pins is arranged between the first welding pin and the second welding pin, one end of the other two positioning pins is connected with the third welding pin and the fourth welding pin, and the other end of the other positioning pin is inserted into a corresponding positioning hole on the PCB.

2. The metal spring structure of claim 1, wherein the four solder feet are soldered to corresponding four pads on the PCB.

3. The metal spring structure of claim 1, wherein the three positioning pins are inserted into corresponding positioning holes on the PCB.

4. A metal spring structure welded on a PCB by SMT as claimed in claim 1, wherein said two fingers are in contact with contacts on the PCB.

5. The metal spring plate structure welded on a PCB board through SMT according to claim 1, wherein said metal spring plate is made of phosphor bronze nickel plating material.