Fence terminal of switching power supply and clamping seat of fence terminal

Abstract

The utility model discloses a fence terminal of a switching power supply, which is characterized in that a clamping seat is of a U-shaped structure, welding legs on two sides are not centered and deviated to one side, a fool-proof effect is achieved, the clamping seat is fixed with a printed circuit board through welding, the bottom of the clamping seat is flush with the printed circuit board, and the side surface of the clamping seat is flush with a fence terminal body. An opening of the clamping seat is flush with a copper pin of the fence terminal, the function of reinforcing the fence terminal is achieved through limiting of several faces and parallel to the stress direction of the fence terminal, and meanwhile the clamping seats of the corresponding number can be selected and used according to the requirements of different fence terminals. Assembling is easy, and using is flexible.

Description

TECHNICAL FIELD

[0001] The utility model belongs to signal terminal accessory field, especially relate to a switch power's fence terminal and its card seat. BACKGROUND

[0002] In prior art, the existing bend foot fence terminal is reinforced by glueing on the back of the terminal after copper foot welding, the glueing range is greatly influenced by the operation method of the worker due to the great fluidity of the glue, the stability of the quality cannot be guaranteed, and the copper foot of the fence terminal is easily deformed when the screw is locked, which leads to tin cracking of the copper foot of the fence terminal and influences the electrical property of the product, so a reliable structure is needed to fix the bend foot fence terminal. SUMMARY

[0003] In view of the defects in the prior art, the utility model provides a switch power's fence terminal to solve the problems in the background, the utility model discloses a positioning insert is added to the printed circuit board, the displacement of the fence terminal is limited by the structural strength of the utility model, so as to reinforce the welding strength of the fence terminal and guarantee the welding effect of the copper foot of the fence terminal.

[0004] In order to solve the above problems, the technical scheme provided by the utility model is as follows:

[0005] A switch power's fence terminal, including PCB board and terminal body assembled on it, the terminal body includes metal pin, and further including card seat matched with the terminal body, the overall structure of the card seat is H-shaped, including two side walls and back plate connected in the middle of the two side walls, the lower part of the back plate is provided with an opening, and the lower end of the two side walls is provided with a welding pin; the card seat is assembled and fixed on the PCB board through the welding pin, and the opening of the back plate of the card seat can be abutted on the top of the metal pin of the terminal body, so as to press the upward movement of the terminal body.

[0006] Preferably, the card seat is made of metal, and the surface is tinned.

[0007] Preferably, when the card seat is assembled and fixed on the PCB board through the welding pin, the lower end of the side wall of the card seat is abutbed against the PCB board, and the back wall of the back plate of the card seat is abutted against the terminal body.

[0008] Preferably, the front surface of the card seat is in inverted U-shaped structure.

[0009] Preferably, the number of the card seat is less than the number of the metal pin of the terminal body.

[0010] Preferably, the welding pins of the card seat are distributed on the two side walls, and are distributed on the two sides of the metal pin of the terminal body after being assembled with the terminal body, and are in perpendicular state with the metal pin of the terminal body.

[0011] Preferably, the welding pin of the holder is not centered at the lower end of the side wall, so as to prevent mistakes when passing through the furnace together with the terminal body.

[0012] The utility model discloses a holder of the fence terminal of switching power supply, be applicable to the positioning insert of the metal pin of fence terminal, the overall structure of holder is H type, including two side walls and the backboard that is connected in the middle of two side walls, and the opening is equipped in the backplate lower part, and the opening of holder backplate can be resisted in the top of the metal pin of terminal body, for pressing the upward movement of terminal body, the welding pin is equipped at the lower end of two side walls, is used for assembling fixed on the PCB through the welding pin.

[0013] Preferably, the holder is made of metal and has a tin-plated surface.

[0014] Preferably, the front face of the holder is shaped like an inverted U.

[0015] The bent-pin fence terminal of the switching power supply has the beneficial effects that,

[0016] The holder has a U-shaped structure, the welding pins are distributed on both sides of the copper pins of the fence terminal and are perpendicular to the copper pins, the welding pins are not centered and are biased to one side, preventing mistakes, the holder is fixed to the PCB by welding, the side of the holder is flush with the terminal body, limiting the backward movement of the fence terminal, and the opening of the holder is flush with the copper pins of the fence terminal, limiting the upward movement of the fence terminal. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a perspective exploded view of the fence terminal of the switching power supply.

[0018] Figure 2 It is an assembled perspective view of the fence terminal of the switching power supply.

[0019] Figure 3 It is a perspective view of the holder for the fence terminal of the switching power supply in different quantities.

[0020] Figure 4 It is a cross-sectional structural schematic view of the application scenario of the fence terminal of the switching power supply.

[0021] Figure 5 It is a perspective view of the holder of the fence terminal of the switching power supply.

[0022] Figure 6 It is a perspective view of the holder of the fence terminal of the switching power supply from another angle.

[0023] Figure 7The utility model discloses a main view of the card seat of the fence terminal of switching power supply.

[0024] Figure 8 The utility model discloses a side view of the card seat of the fence terminal of switching power supply.

[0025] Among the above-mentioned drawing, the drawing mark explanation is as follows:

[0026] Card seat (the terminal seat of fixed function) 1, the welding pin of card seat 11, the lateral wall of card seat 12, card seat backplate 13, the opening of card seat backplate 14, fence terminal 2, terminal body 21, metal pin 22, PCB board (printed circuit board or circuit board) 3, the soldering pad on PCB board 31 Specific implementation

[0027] Please refer to Figures 1 to 8 , a kind of technical scheme drawing provided by the utility model embodiment, a kind of fence terminal of switching power supply, including PCB board 3 and the terminal body 21 assembled on it, terminal body 21 includes metal pin 22, still include the card seat 1 used with terminal body, card seat is similar to H type, including two lateral walls 12 and the backplate 13 connected in two lateral walls middle, backplate lower part is equipped with opening 14, two lateral walls lower end is equipped with welding pin 11;Card seat 1 is assembled and fixed on PCB board 3 by welding pin 11, the opening of card seat backplate can be in the top of the metal pin of terminal body, to press the upward movement of terminal body.

[0028] Preferably, the welding pin 11 of the card seat is distributed in the two lateral walls, and is distributed on the two sides of the metal pin of the terminal body after being assembled with the terminal body, and is in a perpendicular state with the metal pin of the terminal body. The welding pin 11 of the card seat is not centered at the lower end of the lateral wall, so as to prevent the card seat from being assembled with the terminal body in the oven. The card seat 1 is made of metal, and the surface thereof is tinned. When the card seat is assembled and fixed on the PCB board by the welding pin 11, the lower end of the lateral wall 12 of the card seat abuts against the PCB board 3, and the rear wall of the backplate 13 of the card seat abuts against the terminal body 21.

[0029] Specifically, a kind of switch power supply fence terminal, after bending foot type fence terminal 2 is inserted into PCB 3, it is inserted into card seat (terminal seat for fixing) 1 again, the soldering leg 11 of card seat 1 is not centered, only one direction can be inserted into the solder pad 31 of circuit board, the side wall 12 of card seat and back plate 13 are pressed against the body 21 of bending foot type fence terminal, to form 3 point positioning structure on the surface of fence terminal body to strengthen the limit of the movement of fence terminal in this direction, the copper leg 22 of bending foot type fence terminal is pressed in the opening 14 of card seat, after the whole assembly is completed, it is passed through furnace together, form an entirety, so that card seat 1 realizes the limiting function of bending foot type fence terminal 2 in each direction, the strength of bending foot type fence terminal is increased, the copper leg of bending foot type fence terminal is guaranteed not to crack tin with circuit board, so as to guarantee the electrical function of product.The scheme, simple structure, easy to assemble, low cost.

[0030] Card seat 1 looks like a reverse U-shaped structure, and the overall structure looks like H-shaped, the two side soldering legs 11 are evenly distributed, and are in a vertical state with the copper leg of fence terminal, and the stress strength is large;Card seat 1 is made of carbon steel material, and the surface is tinned, which improves the strength of the terminal and is not easy to deform.

[0031] The fence terminal of the utility model presents U-shaped structure, the two side soldering legs are not centered and are biased to one side, play the role of preventing stupid, through the welding and fixation with printed circuit board, the bottom of card seat is flush with printed circuit board, the side of card seat is flush with the body of fence terminal, the opening of card seat is flush with the copper leg of fence terminal, through the limiting of several surfaces, plus parallel with the stress direction of fence terminal, reach the function of reinforcing fence terminal. Figure 2 Or Figure 3 As shown, the utility model can select and use corresponding number of card seats according to the limiting needs of different fence terminals, and is easy to assemble and flexible to use.

[0032] The above is only the preferred embodiment of the utility model, so it cannot limit the range of the utility model implementation, that is, equivalent changes and modifications made according to the scope and content of the utility model patent should still be within the scope covered by the utility model.

Claims

1. A gate terminal for a switching power supply, comprising a PCB board and a terminal body assembled thereon, the terminal body comprising metal leads, characterized in that: It also includes a card holder that can be used with the terminal body. The overall structure of the card holder is H-shaped, including two side walls and a back plate connected in the middle of the two side walls. The back plate has an opening at the bottom and welding pins at the bottom of the two side walls. The card holder is assembled and fixed on the PCB board by soldering pins. The opening of the card holder back plate can abut against the top of the metal pins of the terminal body to press down the upward movement of the terminal body.

2. The gate terminal of the switching power supply according to claim 1, characterized in that: The card holder is made of metal with a tin-plated surface.

3. The gate terminal of the switching power supply according to claim 1, characterized in that: When the card holder is assembled and fixed on the PCB board by welding pins, the lower end of the side wall of the card holder abuts against the PCB board, and the rear wall of the back plate of the card holder abuts against the terminal body.

4. The gate terminal of the switching power supply according to claim 1, characterized in that: The front of the card holder has an inverted U-shaped structure.

5. The gate terminal of the switching power supply according to claim 1, characterized in that: The number of card holders is less than the number of metal pins on the terminal body.

6. The gate terminal of the switching power supply according to claim 1, characterized in that: The welding pins of the card holder are distributed on both side walls, and after assembly with the terminal body, they are distributed on both sides of the metal pins of the terminal body and are perpendicular to the metal pins of the terminal body.

7. The gate terminal of the switching power supply according to claim 1, characterized in that: The welding pins of the card holder are not centered at the lower end of the side wall, so as to prevent mistaken connection when the card holder is reflowed with the terminal body.

8. A retainer for a gate terminal of a switching power supply, suitable for positioning plugs for the metal pins of the gate terminal, characterized in that: The overall structure of the card holder is H-shaped, including two side walls and a back plate connected in the middle of the two side walls. The back plate has an opening at the bottom, and the opening of the card holder back plate can abut against the top of the metal pins of the terminal body to press down the upward movement of the terminal body. The lower ends of the two side walls are provided with soldering pins for assembly and fixation on the PCB board through the soldering pins.

9. The holder for the gate terminal of the switching power supply according to claim 8, characterized in that: The card holder is made of metal with a tin-plated surface.

10. The holder for the gate terminal of the switching power supply according to claim 8, characterized in that: The front of the card holder has an inverted U-shaped structure.

Images